Texmaker is a free, modern and cross-platform LaTeX editor for Linux, macOS 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.