ConTEXT is a closed-source freeware text editor for Microsoft Windows, aimed at software developers. It can open and edit very large files, while requiring only modest amounts of RAM and hard drive space to run.

It has built-in syntax highlighters for C/C++, Delphi/Pascal, FORTRAN, 80x86 assembler, Java, JavaScript, Visual Basic, Perl/CGI, HTML, SQL, Python, PHP, Tcl/Tk, and its own syntax highlighter definition language. Other features are code templates, support for UTF-8, and the ability to work with several document windows using the Multiple Document Interface. ConTEXT can integrate compilers to compile source code from within the editor, and run external tools to manipulate loaded files (e.g. Pretty Printer). The output of such external programs, e.g. error messages, can be captured for further use. Incremental search and basic regular expressions are supported for searching and replacing. ConTEXT is available in many languages.

ConTEXT is a winner of the Pricelessware 2006 award.

On 7 September 2007 the creator of ConTEXT announced he wanted to sell the project including the full source, copyrights, website and domain.. In December 2007 it was announced that the complete project was bought and ConTEXT Project Ltd was setup as a Ltd Company.. Development of ConTEXT will continue as a closed-source freeware program.