Topic: Texmaker is the original LaTeX editor since 2003 - by the creator of Kile

[Software Santa]

Texmaker is the original LaTeX editor since 2003 - by the creator of Kile. Linux / Mac OS X / Windows.

https://www.xm1math.net/texmaker/download.html

TEXMAKER
Free cross-platform LaTeX editor since 2003
(Windows, MacOsX, Linux)

"Powerful, easy to use and elegant"

Powerful Editor with unicode support, spell checking, auto-completion, code folding

Integrated Pdf viewer with synctex support and continuous view mode


Features

Texmaker is a free, modern and cross-platform LaTeX editor for linux, macosx and windows systems that integrates many tools needed to develop documents with LaTeX, in just one application.
Texmaker includes unicode support, spell checking, auto-completion, code folding and a built-in pdf viewer with synctex support and continuous view mode.

Texmaker is easy to use and to configure.
Texmaker is released under the GPL license .
Unicode editor: Texmaker is fully unicode and supports a large variety of encodings.
Spell checker: Texmaker includes spell checking while typing.
Code folding: All \part, \chapter, \section,.., \begin{foo} \end{foo} blocks can be collapsed.
Code completion: The main LaTeX commands can be quickly inserted while typing.
Fast navigation: Texmaker includes a "structure view" which is automatically updated while typing.
"Master mode": Texmaker allows you to work easily onto documents separated in several files with the "master mode".
"Integrated Pdf viewer: "Texmaker includes a built-in pdf viewer with continuous scrolling and synctex support.
"Easy" compilation: "One-click" compilation with the predefined "Quick build" commands.
Mathematical symbols: 370 mathematical symbols can be inserted in just one click.
Wizards: Texmaker includes wizards to generate the most standard LateX code ('Quick document', 'Quick Beamer Presentation' , 'Quick letter', tabular, tabbing and array environments.
LaTeX documentation: An extensive LaTeX documentation is furnished with Texmaker.
Error Handling: Texmaker automatically locates errors and warnings detected in the log file after a compilation and you can reach the corresponding lines in the document in one-click.
Rectangular block selection: Easy rectangular selection with the mouse+Alt key. Users can easily cut/copy/paste columns of a table.
Find in folders: With Texmaker you can search for text in all the latex documents included in a folder (and the subfolders). If you click on a line, Texmaker will open the corresponding document at the right line.
Rotation mode for the pdf viewer: The integrated pdf viewer supports rotation mode.
Regular expressions support: You can use regular expressions for "search and replace".
Full asymptote support: (syntax higlighting - commands - compilation in "one click")
Unlimited number of snippets: Users can define an unlimited number of snippets with keyboard triggers

https://www.xm1math.net/texmaker/download.html