User interface development
- ET++ -- general \c{\zline{iamsun.unibe.ch:/C++}}
- InterViews -- interaction \c{\zline{interviews.stanford.edu:/pub/3.1}}
- Suit -- portable \c{\zline{uvacs.cs.virginia.edu:/pub/suit}}
- Theseus++ -- hypermedia \c{\zline{ftp.igd.fhg.de}}
- Hush {\em -- a C++ API for Tcl/Tk} \c{\zline{ftp.cs.vu.nl:eliens}}
Commercial
- Xv++, StarView, Zinc Interface Library