OpenEditor is a free (licensed under the GNU GPL) text editor for developers (particularly for oracle developers and DBAs). It is really powerful, very easy and intuitive to use. The project can be built with MS VC 2003. The program is developed and tested under Windows 2000/XP/2003 and it should work with Vista/Windows 7 including 64-bit. It's created for SQLTools needs but it can be useful as a standalone editor.
Some major features: ability to handle big files (more than 1,000,000 lines and larger than 100MB), virtually no line size limit (2GB), columnar text selection and editing (like in UltraEdit), match searching for PL/SQL (BEGIN/EXCEPTION/END), regular expression in text searching and replacement, keymap customization (change custom.keymap).
The major limitation is lack of support for UTF or UNICODE and I no plans for this in the nearest future.
Check for the latest news here: http://www.sqltools.net/cgi-bin/yabb25/YaBB.pl?board=sql_status