Information for vtwm-5.4.5a:

Comment:
Twm with a virtual desktop and optional Motif-like features

Description:
vtwm is a twm variant with a virtual desktop.  Unlike its older cousin
tvtwm, vtwm is under active development, and supports a number of
relatively new features, such as configurable Motif-like decorations.
The homepage for this program is:

WWW: http://www.visi.com/~hawkeyd/vtwm.html