Glimmer (called CodeCommander before) a programmers editor has been released for OS/2. As Glimmer is an Xfree86OS/2 app, you either need Xfree86OS/2 installed or another X-SAerver like HOBlink X11.
Features:
Multiple file loading.
New/Open/Save/Save As
Cut/Copy/Paste
Multiple level Undo/Redo
Tear Away windows (any file may be torn away from the main window).
Custom color selections.
Custom font selections. (Normal, Italic, Bold, Bold-Italic)
File, Edit, Highlight, Find, Line Number, and Command toolbars.
Background pixmap for editing window.
File information: Current line, total lines, current byte, total bytes, ascii value of current byte.
Find/Replace/Replace All, including multiple finds.
Insert many common text segments, including: ChangeLog entry, GPL, Date, Time, etc.
Gnome session management compliant.
Save the state of the program to a "Session" file for editing groups of files.
Python scripting support. Make macros and file filtering scripts, as well as custom menu entries!
Bracket Matching Scriptable hooks for several events including enter-pressed and tab-pressed.
Highlighting support for: Ada, Bash/Sh, C/C++, DTML, HTML, Java, Latex, GNU Make, Object Caml, Perl, PHP, PO (Language Translation), Python, Lisp (guile, scheme, etc), SGML, SQL, Tcl/Tk, WML, XML, and Z80 Assembly
-> URL: http://birdy.hpage.net
Source: OS/2 ORG