Way back on Squeak V2.3a I wrote some code which provided something I
called a Source Set Manager.  It ran with a headless backend and the GUI
was in MVC.  The concept was to create a manager for "applications" in
Squeak.  Considering the recent discussions on managing Squeak source I
thought it might be useful to at least share something attempted in the
past.  The web page with a screenshot and access to the 2.3 file is
found here:
    http://w3.one.net/~swessels/squeak/ssmgr.htm

 - Steve