Open source LaTeX editors

Kile

Kile is a user friendly TeX/LaTeX editor for the KDE desktop environment. (GPL)

Linux - FreeBSD

Texmaker

Texmaker is a free LaTeX editor, that integrates many tools needed to develop documents with LaTeX, in just one application. (GPL)

Linux - FreeBSD - Windows - macOS

TeXShop

TeXShop is a free LaTeX and TeX editor and previewer for OS X. It is licensed under the GNU GPL. (GPL)

macOS

TeXworks

The TeXworks project is an effort to build a simple TeX front-end program that will be available for all today's major desktop operating systems. It is deliberately modeled on Dick Koch's award-winning TeXShop for Mac OS X. (GPL)

Linux - Windows - macOS

4 applications