Qt Creator, Nokia's multiplatform Qt Integrated Development Environment, is now available for OS/2. Debugging is currently not supported.
 
It features:

  •     C and JavaScript code editor
  •     Integrated UI designer
  •     Project and build management tools
  •     Support for version control

Netlabs: http://svn.netlabs.org/qtapps/wiki/QT4%20Development
Download: qtcreator_131_os2_setup.exe & qtcreator_astyle051_setup.exe