netcrunch server

WebMon helps you configure OS X's built-in web server to support WebDAV, PHP.

MailServe sets up a totally buzzword-compliant mail server on Mac OS X.

Open-source web server

Virtuoso is an innovative enterprise grade server

Lasso 9 Server, the centerpiece of the Lasso platform

sends data back to a server that can help identify your computer's location

Collaboration software, server edition available.

Authoxy runs locally as a proxy server to intercept HTTP and HTTPS requests.

Radiator is a highly configurable and flexible RADIUS server

Wired Tracker is the Wired tracker server.