X Display Manager. Xhost Phonebook, X Login, X Desktop Chooser, and XDM X server (vnc server).
Easy install, Clean uninstall (and X up when done). Highly compatible, no libs. Like gdm but different in goals and features. Great as primary dm or as a backup dm.
pre-requirements: X Windows. xdm(1) binary (package) if it was removed (xdm is part of traditional X)
Cress is a comprehensive toolset for graphical service/workflow design
...It simplifies service creation to drawing diagrams, clicking buttons and defining a few tool parameters. All key functions of Cress can be controlled from the Chive diagram editor.
Cress is written using portable and widely used languages (Perl and Java). It can be extended by a developer for other kinds of services that can be characterised by activity flows.