The Best Latex Editor For Mac

Comparison of TeX editors Jump to. Auto-Latex Equations for Google Docs: Source Online. Editor Screenshot. It helps the users for editing the documents to markup level. TeXmaker is one of the best LaTeX editor available out there. It’s to be the most user-friendly LaTeX IDE for the newbie. Download TeXmaker. There are lots of best LaTeX Editor available for Linux, but it seems difficult to choose the Best LaTeX Editor for both advanced and beginner. For that reason, I have written a detailed LaTeX tutorial and how to install those on Ubuntu Linux which will help you to get the best one.

Active27 days ago

What editors/IDEs are available for easing the process of writing TeX/LaTeX documents?

Please state some useful features like code completion, spell checking, building final DVI or PDF files, etc.

This question is undergoing a systematic refurbishment, see Let’s polish the Editors/IDEs question on Meta. If you’d like to see another editor feature covered here or to take care of an editor that’s not covered yet, share your ideas in that meta question.

List of editors

Links to answers.

56 Answers

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Emacs with AUCTeX — emacsauctex

Platforms: Windows, Mac (incl. Aquamacs fork), Unix
License: Free software (GPL)
Languages: de, dk, fr, is, it, jp, nl, pl, se, sk are supported by AUCTeX language styles
Unicode: Yes, from Emacs 23, characters are represented using Unicode
RTL/bidirectional support: From Emacs 24, through bidi-mode
% !TeX directives: No, but has several realizations of file local variables
Syntax highlighting: Yes, customisable through customize and Elisp
Code completion: Yes
Code folding: Yes
Spell checking: Yes
SyncTeX: Yes
Built-in output viewer: Yes
Project management:org-mode, reftex-mode, speedbar

Emacs is one of the oldest programmable editors, which has basic support for TeX and friends. AUCTeX is a plugin to Emacs which provides a much more advanced support for editing LaTeX, ConTeXt, docTeX, Texinfo, and Plain TeX documents. It comes with a sophisticated auto-completion mechanism for environments and commands, supporting by default more than two hundreds LaTeX packages (but virtually any package can be automatically parsed in order to provide autocompletion for its commands and environments).

(In this screenshot, visual-line-mode is enabled. In this mode, lines that are wider than the window are broken between words. The line breaks are not added to the source file.)

RefTeX is another plugin to Emacs, independent from and complementary to AUCTeX, which aids you with the management of bibliographic sources. It makes all your references as easy to find as a C-c <key>, for both BibTeX and biblatex, and also provides convenient shortcuts for navigating between sections in your document, bound by default to C-c =:

(Note that colour themes are completely customizable)

AUCTeX supports multi-file parsing, so that huge documents with input or include commands are easily compiled with C-c C-c from any of their files. No more going back to the master file in order to compile.

AUCTeX's preview-latex offers WYSIWYG previewing of formulae.

Interesting features of Emacs:

Use table-insert along with table-generate-source and table-recognize-* functions to easily create a base for your tables.
Extensively documented, both in Emacs, via the Emacs and AUCTeX Texinfo manuals, and via many books in several languages.
Supports most of vim's features and keybindings through evil-mode.

TeXstudio — texstudio

(formerly TexMakerX)

Platforms: Windows XP/Vista/7/8/10, OS X, Linux, FreeBSD
License: GPL v2
Languages: cs, de, en, es, fr, hu, ja, pl, pt_BR, ru, vi, zh_CN
Unicode: Yes
RTL/bidi: experimental
% !TeX directives: Yes
Syntax Highlighting: Yes, customizable
Code Completion: Yes, customizable and auto-customized
Code Folding: Yes
Spell Checking: Yes, including grammar checking based on LanguageTool.
SyncTeX: Yes
Built-in Output Viewer: Yes, supports PDF
Project Management: Yes

I'd recommend TeXstudio an interesting fork of Texmaker that I find more usable and customizable.

Here is a screen shot of TeXStudio.

Other pros:

cross-platform,
writing support (incr. search, folding, navigation, auto-completion, custom macros)
inline interactive spell-checking
support to the main latex tools, including tikz, pstricks, etc.
multi-views: math, structure
svn support
runs in a usb
pdf viewer included, but can be configured to use external viewers (also with synctex)
live-updating inline preview for formulas and code segments
tools for easy table editing and table-code formatting
multiple cursors
smart BibTeX auto-complete (including multiple, comma-separated citations) and hovering on cite text shows a preview of the BibTeX entry
document templates
very active and responsive developer and community
adjustable icon size makes it suitable for high resolution displays (preferences->show advanced options->gui scaling)

Cons:

Vim with LaTeX-suite — vimlatex-suite

Platforms: Windows, Mac, Linux and others
License: Open Source Charityware
Languages:?
Unicode: Yes
RTL/bidi support:partially
% !TEX directives: No, but has modelines
Syntax Highlighting: Yes, customizable
Code Completion: Yes (using Omni Completion, extendable with SnipMate plugin)
Code Folding: Yes
Spell Checking: Yes
SyncTeX: Yes, see e.g. this question
Built-in Output Viewer: No
Project Management:?

If you're really hardcore, you can always use Vim. There's a suite of macros and whatnot appropriate for Vim which can be used to edit LaTeX files.

You can have word/command completion via <C-P> and <C-N>, to go the previous and next matches, respectively.

There is a version of Vim with graphical menus, called gVim. If it is used with LaTeX-suite, then various TeX commands are displayed in the menu bar for quick insertion in the text. (For Mac, there is a native build called MacVim.)

Features

Vim also allows for code folding, the package vim-latex offers automatic code folding. Folding can also be done manually based on a key (e.g., {{{ and }}}) to open and close automatic folds. Example of folds can be seen as follows:

As per original question, some other useful features not listed elsewhere in this post include

VIM

Regular Expressions
Powerful keyboard short-cuts/commands
Extremely customizable
Smart Indenting

LaTeX-Suite

Calling the compiler is quick with ll; viewing the result is lv
Environments accessible with three letter sequences in insert mode:
- EEQ = equation environment
- EFI = figure environment
Place-holders (<+text+>) can be jumped to with Ctrl-J without leaving insert mode
Inverse searching: Double click in (supported) pdf viewer and you jump to corresponding tex source line

For issues, pull request and installation from github see here.

Texmaker — texmaker

Platforms: Windows XP/Vista/7/8, OS X 10.5+, Linux
License: GPL license, free
Languages: cs, de, el, en, es, fa, fr, gl, hu, it, nl, pl, pt, pt (bra), ru, se, sr, zh (cn), zh (tw)
Unicode: Yes
RTL/bidi:?
% !TEX directives: No
Syntax Highlighting: Yes, customizable
Code Completion: Yes, customizable
Code Folding: Yes
Spell Checking: Yes
SyncTeX: Yes
Built-in Output Viewer: Yes, supports PDF
Project Management: Yes

Customizable code completion

Rectangular block selection

The editor TeXstudio started out as a fork of Texmaker and was originally called TexMakerX.

TeXworks — texworks

Platforms: Windows XP/Vista/7/8, OS X, Linux all pre-compiled plus source available
License: GPL
Languages: en, af, ar, ca, cs, de, fa, fo fr, it, ja, nl, ko, pl, pl, ru, sl, tr zh
Unicode: Yes
RTL/bidi: Yes
% !TEX directives: Yes
Syntax Highlighting: Yes, regex-based
Code Completion: Yes, customizable based on 'known entry' list
Code Folding: No
Spell Checking: Yes, but have to install by hand
SyncTeX: Yes
Built-in Output Viewer: Yes, PDF (Poppler-based, auto-follow option to scroll source and preview together)
Project Management: No

Screen shot of TeXworks on the Mac: the layout stays the same on Windows and Linux:

On Windows and Linux, I use TeXworks, which provides with an editor window and a document preview window. Clicking in the document preview locates the edit mark at that TeX source corresponding to the clicked location.

Kile — kile

Platforms: Linux, Windows¹ (XP, Vista, 7)
License: GNU GPL 2
Languages: bg, bs, ca, cs, da, de, el, en_GB, eo, es, et, fi, fr, ga, gl, hi, hne, hu, it, ja, kk, lt, mai, ms, nb, nds, nl, nn, pl, pt, pt_BR, ro, ru, sk, sv, tr, ug, uk, zh_CN, zh_TW
Unicode: Yes
RTL/bidi: Yes
% !TEX directives: No²
Syntax Highlighting: Yes, customizable
Code Completion: Yes, customizable
Code Folding: Yes
Spell Checking: Yes [uses system dictionaries so works even for unsupported languages]
SyncTeX: Yes (but the -synctex=1 flag must be added manually to the build engine)
Built-in Output Viewer: Limited³ (PNG preview of snippets – e.g. current environment or selection – converted from DVI/PS/PDF)
Project Management: Yes
Command Line: Yes
Structure/Outline View: Yes
VI Input Mode: Yes

¹ Starting from version 3.0, there is a windows installer available.Installation instructions for 2.x versions can be found here.The Windows version of the KDE applications is not finalised, so some of them may be unstable.

² While Kile does not have !TeX directives for defining compilation tool etc., it does have some 'magic comments', similar to Latexila and TeXStudio. They are %TODO and %FIXME, which appears in the structure view, for adding notes in the code, and %BEGIN/%END for defining foldable regions of code.

³ A full built-in output viewer will be available in Kile 3 and is already available by compiling the Kile git master branch

Sublime Text with LaTeXTools plugin

Available for: Windows, Mac, Linux

This is a simple, but powerful, editor. It's similar to Notepad++, but available on multiple platforms, and much easier to setup for LaTeX with the LaTeXTools plugin, which is available from the Package Control tool. It is also similar to TextMate, but is being actively developed and has a huge community which develops plug-ins for. It's also much prettier than both of them!

Note that this commercial software, and inquires a licence after an evaluation period (costs $70 USD). It is possible to run Sublime Text without buying a licence, but you will be reminded that you are using an unregistered copy.

Sublime Text features some really powerful tools when it comes to typing, some of which you don't understand that you could do without:

multiple cursors
go-to anything
snippets
incremental find
project management
numerous build-systems

and more (take a look at Perfect Workflow in Sublime Text 2). The screenshot below also displays its feature for finding citations from BibTeX.

Sublime Text is an almost completely text based editor, with almost unlimited potential. The list of features is about as long as you want it to be. Install Package Manager, and you have a long list of repositories only a few seconds install-on-the-fly away.

Platforms: Windows, Mac, Unix
Licence: Free to try, free to buy
% !TEX directives: Yes
Syntax highlighting: Yes
Code completion: Yes
Code folding: Yes
Spell check: Yes, both built-in and external packages
SyncTeX: Yes
Built-in output viewer: No
Project management: Yes

TexShop

Available for: Mac
Open Source

In Mac I use TexShop, shipped with MacTeX, and works smoothly together with MacTeX.

Among the features that it has are:

Editing features

syntax highlighting
source/PDF synchronization
autocompletion of commands and environments
macros
stationery (for document templates)
latex panel of commonly used symbols
matrix panel for simple array input
import spreadsheet cells with LaTeX formatting
regex search/replace

Processing features

built-in support for TeX, LaTeX, Xe(La)TeX, Lua(La)TeX, ConTeXt, BibTeX, biber
built-in support for Sketch, Asymptote, Sage, LilyPond, LatexMk, MetaPost
user definable Engines (scripts to process documents)

TeXnicCenter — texniccenter

Platforms: Windows XP/Vista/7/8/10
Open Source
Languages: English, German, more dictionaries for spelling control downloadable
Unicode: Yes (in version 2, which was released mid-september 2013).
RTL/bidi:?
% !TEX directives: No
Syntax Highlighting: Yes, customizable (also background colour)
Code Completion: Yes
Code Folding: Yes
Spell Checking: Yes
SyncTeX: Yes
Built-in Output Viewer: No. You can config TeXnicCenter to use an external PDF viewer like Acrobat Reader or SumatraPDF with synchronized viewing.
Project Management: Yes

I highly recommend TeXnicCenter. It stands out because it is the right mix between a GUI heavy editor (think Lyx) and no GUI (think emacs). Moreover, it is very easy to setup on Windows; and it integrates with MiKTeX without requiring extra configuration.

An easy-to-navigate user interface provides a document tree, editor and compiling output as well as a vast array of drop-down menus:

^{Click image to enlarge}

Customizable profiles allow for manipulating of latex, bibtex and makeindex parameters, as well as post-processing features and viewer parameters (e.g. forward and backward search):

^{Click image to enlarge}

TeXnicCenter also allows to jump directly to the line that caused an error and provides code completion. TeXnicCenter has easy and integrated project management tools, and handles multiple files conveniently. It can be synchronized with pdf viewers such as Adobe Reader or SumatraPDF to provide forward and backward search options. Forward and backward search lets user jump and navigate between LaTeX code and pdf output seamlessly.

Note: The companies behind ShareLaTeX and Overleaf have merged, and as such the two services will at some point in the future be merged into one. See https://www.overleaf.com/blog/518-exciting-news-sharelatex-is-joining-overleaf#.Wa_pdL8hWV4.

Unlimited projects for free
latex, pdflatex and XeLaTeX compilers
Collaborate with others, see what they are typing in real time like Google documents
Auto Complete
Multi Language spell check
Chat with online collaborators
Export and import data
Sync with Dropbox
Regular snapshots allowing for rolling back
Vim and Emacs Bindings
Custom Themes
Extensive inbuilt template library
It's Open Source, so you can install it on your own server

LyX

Available for: Windows, Mac, and Linux
Open Source

I use LyX and I love it. From the webpage:

LyX is a document processor that encourages an approach to writing based on the structure of your documents (WYSIWYM) and not simply their appearance (WYSIWYG). LyX combines the power and flexibility of TeX/LaTeX with the ease of use of a graphical interface. This results in world-class support for creation of mathematical content (via a fully integrated equation editor) and structured documents like academic articles, theses, and books. In addition, staples of scientific authoring such as reference list and index creation come standard. But you can also use LyX to create a letter or a novel or a theatre play or film script. A broad array of ready, well-designed document layouts are built in.

Quite intuitive and user-friendly, and it is possible to import from and (more importantly) export to LaTeX.

Too many useful features to mention, but I'll mention one that I find extra good: If you want to typeset a '2-dimensional' math expression, LyX is the way to go. I have used LyX for nearly ten years. Switched to AUCTeX recently, but I still use LyX whenever I want to get the LaTeX code for a complicated math expression.

WinEdt — winedt

Platforms: (Windows XP until version 9.1)/Vista/7/8/10
License: Shareware, personal license $60
Languages: en
Unicode: Yes (from version 7)
RTL/bidi: Yes (from version 10)
% !TEX directives: Probably possible.
Syntax Highlighting: Yes, customizable and including a .dtx mode
Code Completion: Yes, customizable
Code Folding: Yes, customizable (from version 8)
Spell Checking: Yes
SyncTeX: Yes with appropriate PDF viewer (e.g. SumatraPDF)
Built-in Output Viewer: No
Project Management: Yes, own project management system and outliner

A lot of useful add-ons for WinEdt can be found on the WinEdt's Community site

WinEdt is a good option on Windows.

I wrote a post on some of the features I liked in WinEdt 6.0.To summarise:

Tree View can be customised
Automatically display your current location in TOC
Colour coding that aids usability
Intelligent defaults
Options to customise almost anything
Easy configuration interface with MikTeX
One click build process for LaTeX documents
Intuitive default shortcut keys and intuitive alt menu letters

It's not free, but it's also not that expensive.

WinEdt's new full Unicode support and its translation tables allow to show ∀α in the screen but to write {forall}{alpha} in the disk.

TeXlipse

Available for: Windows, Mac, Linux and others (Java based)
Open Source

I've been happily using TeXlipse in Eclipse for a long time, it has integrated code completion (including BibTeX entries), customizable templates, an outline view - and being integrated into Eclipse it includes all useful stuff I'm used to when working in Eclipse, like editor shortcuts, version control, etc.

There is also an Eclipse pdf viewer plugin Pdf4Eclipse with complete support of SyncTeX, which allows forward and reverse search in LaTeX documents. Since TeXlipse rebuilds the LaTeX sources automatically (in background) after a save, the code and the preview of the document are always synchronized.

^{Click image to enlarge}

Texpad — texpad

Platforms: Mac (and iOS)
License: Commercial
Languages: English, German and Japanese
Unicode: Yes
% !TeX directives: Yes
Syntax Highlighting: Yes
Auto-typeset: OSX only
Code Completion: Yes, command completion and autofill
Code Folding: No
Spell Checking: Yes
SyncTeX: Yes
Built-in Output Viewer: Yes, supports PDF
Project Management: Yes, included files opened automatically

Both

Document outline (navigatable table of sections, subsection, etc)
Auto-detection of typesetting chain (bibtex, makeindex, etc.)
Global search
Biber support

OSX

Custom typeset scripts
Snippets and code macros

iOS

Onboard typesetter with support for Virtual fonts, e-TeX and PGF (beamer/tikz).
Built in bundle manager
Typesetting API to provide typesetting services to other applications

Atom with `latex`, `latex-plus`, or `latextools` packages

Platforms: Windows, Mac, Linux
Licence: Open source (MIT license)
% !TEX directives: Yes
Syntax highlighting: Yes (with language-latex package), customizable
Code completion: Yes, customizable
Code folding: Yes
Spell check: Yes
SyncTeX: Yes
Built-in output viewer: Yes (with pdf-view package)
Project management: Yes (with atom-project-manager package)

Atom is a modern, approachable, yet throughly hackable text editor based on web technologies, with a large community providing extensions through its highly customizable package system. Atom has packages providing Git integration, BibTeX autocompletion and many other features. It draws frequent comparisons with Sublime Text, but has the notable advantage of being open source and completely free.

To compile LaTeX from within the editor, one may choose from a number of packages: latex, latex-plus, and latextools. The last one is an ongoing port of Sublime Text's LaTeXTools plugin and seems to be the most feature-rich of the three (as of 2016-03-20), with additional goodies like reference and bibliography completion as well as environment wrapping. Alternatively, the latexer package also provides reference and bibliography completion.

Syntax highlighting is separately provided by the language-latex package. The output can be automatically opened and synced within the editor through the pdf-view package, or in an external viewer.

Notepad++

Platforms: Windows XP/Vista/7/8
License: Free software (GPL)
Languages: en, zh, fr, es, hu, ru, nl, pl, de, it, da, cs, sl, sk, uk, tr, pt, no, sv, ca, ar, lt, gl, fi, el, ro, ko, he, fa, sgs, bg, id, sq, ja, hr, ka, eu, be, sr, nn, th, ms, oc, fur, lb, tl, uz, kk, af, ky, mk, lv, ta, az, bs, eo, lij, hi, sc, ug, te, an, si
Unicode: Yes
RTL/bidi: Yes
% !TEX directives: No
Syntax Highlighting: Yes, customizable (also background color)
Code Completion: Yes, customizable
Code Folding: Yes
Spell Checking: Yes (through DSpellCheck)
SyncTeX: Yes
Built-in Output Viewer: No. You can configure notepad++ to use an external PDF viewer like Acrobat Reader or SumatraPDF with forward and backward searching.
Project Management: Yes (no master file)

I use Notepad++ and I love it. It has all the powerful features you expect from a good text editor (powerful find/replace, regex, macros, plugin support, etc.) and lots of features for coding, like syntax highlighting (and it has built-in rules for TeX), code folding, etc. The best part is that you can map keys to run external programs, so all you have to do is tap a bound key and it instantly runs your favorite compiler or automator and displays your output in one step, outputting errors in the command window if there are any.

It's not made exclusively for TeX, but if you're on Windows and want to use a single text editor for many purposes, one of which is TeX, Notepad++ is a very good option.

This question has answers with two methods of setting up the connection between notepad++ and a TeX distribution, as well as with SumatraPDF.

Gummi

Platforms: Linux (unstable development version for Windows exists)
License: Open Source (MIT)
Languages: ar, ca, cs, da, de, el, es, fr, hu, it, nl, pl, pt, pt-BR, ro, ru, zh-CN, zh-TW
Unicode: Yes
RTL/bidi support:?
% !TEX directives: Yes
Syntax Highlighting: Yes
Code Completion: No
Code Folding: No,
Spell Checking: Yes (liited
SyncTeX: Yes
Built-in Output Viewer: Yes
Project Management: Yes

Emacs is great, but what I generally use is Gummi. It has a 2-pane live preview which is really useful for catching syntax errors and formatting errors early on. Plus, when you save your latex document it will automatically save a pdf copy. Other features include helpers for matrix and table editing, inserting images, and a citing tool. Even better, there are configurable snippets of code. For example just writing 'item' + Tab write an itemize environment and the first item, and left the cursor after item.

It should be noted that Gummi really work with a hidden temporal copy as .file.tex.swp (instead that directly with file.tex) for previews, and the same happen with auxiliary files. This have the advantage that your working directory apparently remain clean but occasionally this can produce unexpected errors (e.g., using jobname in Gummi)

gedit with the gedit-LaTeX-plugin

Available for: Windows, Mac, Linux and others
Open Source
Unicode: yes
RTL/bidi: yes

It has a clean interface and provides: Code Completion, Spell Checking, Syntax Checking and Validation, Outlines, Wizards, BibTeX Integration, Template Editing, User-Defined Snippets and a preconfigured comprehensive build system using rubber (including LaTeX → DVI with source specials for inverse search).

For my gedit LaTeX suite to be complete, I add two other plugins, first the 'Control your tabs' plugin to get Ctrl-(Shift)-Tab behavior, and also the AutoCompletion plugin which provides automatic suggestions for completion of any word, based on the words already present in the document - it can be a real time saver.

Temporary edit:Currently the plugin is not ready for release with gedit 3. So, if you're running the latest Ubuntu (11.10) or like being cutting edge, you need to manually install the LaTeX-plugin. The easiest way is to download the version you want from here extract and install with the standard ./configure, make, sudo make install sequence. Read the INSTALL file in the archive for more details. You can also get the most recent version of the plugin from their git repository.

Note: If the ./configure script gives the error 'No package ‘gtk+-3.0′ found' then, under Ubuntu, run sudo apt-get install libgtk-3-dev and then try the script again.

TextMate

Available for: Mac
Commercial (Not anymore since version 2.0)

With OS X I use TextMate with MacTeX. Now I don't want to change OS X for Linux only because I work with TextMate. It's powerful like vim and emacs. It's not free 45 euros. You can do all what you want and you can use and define snippets, macros, commands with shell programming or python or ruby. You can use it for mails or you can create HTML pages or you can programming with R, or Ruby. Perhaps to like this editor you need to learn a programming language like ruby or python (Perl and bash can be used). You can try it during one month for free.

Some screenshots:
^{Click image to enlarge}
In this screenshot, you can see the bundles and in the LaTeX bundle you can see some commands and macros. You can define your personal bundle like my 'latex author', you can work with the terminal from TextMate. You can find some movies on the net, to see how to work with TextMate.

EDIT: Since version 2.0, TextMate has gone open source, here it is the link to Github.

Vim with vimtex — vim

Platforms: GNU/Linux, MS Windows, Mac, wherever you get Vim with clientserver and a TeX distribution with latexmk running
License:Vim License (Vim), MIT License (vimtex)
Unicode: Yes
RTL/bidi support:Partial
% !TEXdirectives:Only % !TEX root, however, Vim by itself supports many things such as modelines and buffer-local variables
Syntax highlighting: Yes, customizable via colorschemes; further support for the listings package, minted package, as well as some minor improvements on top of the built in Vim syntax plugin
Code completion: Yes; added completion of references and labels via omni-completion, auto-completion available with e.g. neocomplete and YouCompleteMe
Code folding:Yes (according to document's structure)
Spell checking: Yes (built into Vim)
SyncTeX:Yes (additional hacks for viewers which do not use SyncTeX available)
Built-in output viewer: No
Project management: vimtex supports multi-file documents, but does not provide a way to manage a project per se

I believe Vim needs no introduction. vimtex can be seen as a continuation of LaTeX-Box and is probably the best TeX plugin available for Vim at the moment of speaking. Compilation is handled very smoothly through latexmk. Most popular PDF viewers are supported (including some which by themselves cannot do forward searching).

See a list of features here or read the docs. Unlike LaTeX-Suite, vimtex is a more modern plugin and encourages a much less monolithic design. For example, it provides an omni-complete function for references and labels, but leaves it up to other, more specialized plugins, to automatically call this function.

KtikZ

Available for: Linux and Windows
Open Source

I am a big fan of the Linux editor Ktikz. By default Ktikz is meant to be a real-time editor for TikZ pictures. However, one can edit any type of environment just by editing the default template. Moreover, by creating a template consisting only of the text

one can get real-time compilation of LaTeX documents.

I usually restrict my use of Ktikz to editing Beamer presentations or drawing TikZ pictures (or other projects where the visual output needs extra attention or tweaking). For other purposes the real-time compilation can be more of a distraction than it is worth.

For windows users: install QtikZ (also available in the link). Tested with windows 7 and miktex 2.9, and it works with no problem.

LEd

Available for: Windows
Freeware

Note: Development of LEd has stopped, and the last version is from 2009.

I can recommend LEd. It is Windows only and is just not working on some computers, still it is very functional; standard things like spelling, tree views, macros are present, while it has some more nice functions. I especially like a toolbar for beamer, but also noticeable is an option in search which can be used to highlight occurrences of a few queries at a time (regex supported of course).

Visual Studio Code with LaTeX-Workshop (on GitHub)

other extensions are available

Platforms: Windows, Mac, Linux
License: open source (on GitHub), License MIT
Languages: de, en, fr, ...
Unicode: Yes
RTL/bidi: ...
% !TEX directives: Yes
Syntax Highlighting: Yes, customizable (extensions)
Code Completion: Yes, customizable (extensions)
Code Folding: Yes
Spell Checking: Yes
SyncTeX: Yes
Built-in Output Viewer: Yes
Project Management: Yes
Autosave: Yes
Line Spacing: Yes

note: picture from LaTeX-Workshop description (link: animated gif)

Latexian - Discontinued

Available for: Mac
Commercial - $9.99 on App Store

Latexian was made by Taco Software, a company which has now closed. It was available Mac OS X 10.6 or higher (including Mavericks). Limited support is still being provided for those that previously purchased their software.

This is a very lean editing environment at its core, with many features that can extend its capabilities. One very nice feature is an integrated execution environment that updates a live preview window in near-real time with edits. It is perfect for quick, simple projects.

^{Click image to enlarge}

Features (copied from software site)

OS X Lion & Mountain Lion Features

For OS X Lion and Mountain Lion users, Latexian has support for Autosave, Resume, Versions, and Full Screen.

Navigator

Quickly navigate to chapters, sections, and included files using the Navigator. You can also add your own bookmarks to the Navigator by adding a comment to your document starting with the '!' character.

Live Preview

Live Preview allows you to see how your document typesets while you are editing. The PDF preview appears in a split pane and updates automatically.

Code Completion

Latexian includes Code Completion for LaTeX and BibTeX documents. When navigating the completion list, a brief description is shown for the selected item.

Code Folding

Code Folding allows you to collapse segments of text, making it easier to navigate through your text. Latexian identifies chapters and sections in your document and provides disclosure triangles to fold these in one click. Latexian will remember and restore your folds if you don't edit a document externally.

Code Clips

If you ever get tired of copying and pasting frequently used text segments, then Latexian's Code Clips will alleviate your problems. Code Clips allow you to store, manage, and access those text segments more easily. With Code Clips, you can assign keyboard shortcuts (Command + 0-9) to insert a clip into a document. You can also insert clips through Latexian's Code Completion panel.

Spell Checking

Latexian includes syntax-aware spell checking, including spell checking while you type. It ignores your LaTeX commands, and highlights errors in your text content.

Code Coloring

As you edit your document, Latexian colors your text to make it easier to read and navigate. Coloring is customizable, and Latexian supports coloring for LaTeX and BibTeX documents.

Console

Latexian includes an interactive console for presenting the output of the typesetter, and accepting input requested by the typesetter. Error messages are hyperlinked to the document location where the error occurred.

Find & Batch Find

Latexian includes advanced Find functionality for searching individual documents or entire projects. Support for regular expressions is included.

Platforms: Linux
License: Yes, GPLv3+
Unicode: Yes
Syntax highlighting: Yes
Code completion: Yes, not customizable
Code Folding: No
Spell Checking: Yes
SyncTeX: Yes, with Evince pdf viewer
Built-in Output Viewer: No
Project Management: Yes
Autosave: Yes

GNOME LaTeX is an Integrated LaTeX Environment for the GNOME desktop. It has a very nice and clean interface. Its available in Ubuntu software center.

GNOME LaTeX doesn't have an integrated output viewer, but it works well with Evince which is also a GNOME application. It has customizable one-click buttons to build, view and convert documents.

It has some 'magic' comments for making todonotes, which will show up in the structure panel on the left hand side. These are %TODO and %FIXME, in both cases followed by some text (if there is no text, it won't show in the panel).

WinShell

Available For: Windows
FreeWare

WinShell is a free multilingual integrated development environment (IDE) for LaTeX and TeX. The program includes a text editor, syntax highlighting, project management, spell checking, a table wizard, BibTeX support, Unicode support, different toolbars and user configuration options. It is not a LaTeX system; an additional LaTeX package is required.

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Note: ShareLaTeX and Overleaf have been merged in to one Overleaf v2 and Overleaf v1 had retired on January 8th, 2019.

Unlimited projects and collaborators for free
Rich Text View
pdflatex compiler
Collaborate with others, see what they are typing in real time like Google documents
Auto Complete
Multi Language spell check
Export and import data
Sync with Dropbox
Regular snapshots allowing for rolling back

BaKoMa TeX Word — bakoma

platforms: Windows, OS X, Linux
License: commercial -- €55 or $101 per licence (other quantity discounts)
Languages: English
Unicode: Yes
Syntax Highlighting: Yes, customizable
Code Completion: Yes, customizable
Code Folding: No
Spell Checking: Yes
SyncTeX:?
Built-in Output Viewer: Yes. Can view output in real time, and directly edit output file
Project Management: Yes

I think BaKoMa is an innovative useful WYSIWYG editor. It allows users to edit both in the .tex file and in the output file. The real-time preview feature can come in handy when creating graphics and figures (e.g. using PSTricks or TikZ). In a review of BaKoMa, Martin Osborne made the following comment:

If you find the output of int_0^infty hard to visualize, you'll definitely have trouble with the output of

[BaKoMa] TeX Word makes it easy: you type the code and the output appears instantly. For me, TeX Word has cut the production time for figures by at least 75%.

Inlage

Available for: Windows
Commercial

Inlage is a great LaTeX IDE for Windows Vista/7. It has a lot of features that make it easy to handle LaTeX. The autocompletion has many commands with icons and descriptions and if you have a tablet pc you can use the Math Input Panel to translate a symbol or an equation to LaTeX.

Main features:

Math Input Panel to LaTeX
Excel/Calc tables to LaTeX
autocompletion
spell checker
docking system
inverse/forward search (SumatraPDF)
code folding

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TeXnicle

Best Latex Editor For Mac

Platforms: Mac
License: Free
Languages: English
Unicode: Yes
RTL/bidi: No
% !TEX directives: No
Syntax Highlighting: Yes (configurable)
Code Completion: Yes
Code Folding: Yes
Spell Checking: Yes
SyncTeX: Yes
Built-in Output Viewer: Yes
Project Management: Yes