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.
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