Kig is a program for exploring geometric constructions.

Kasablanca is a graphical FTP client. Among its features are support for both command and data encryption (via auth TLS, not SFTP), FXP (direct FTP to FTP transfer), a bookmark manager, and a queueing system.

Jabbin is an instant messaging program that allows free PC to PC calls using the VoIP system over the Jabber network. Jabbin uses the TINS protocol, which allows a direct connection between two customers and takes advantage of the potential of various protocols. It is compatible with Google Talk.

Twinkle is a software phone for voice over IP communications using the SIP protocol. You can use it for direct IP phone to IP phone communication, or in a network using a SIP proxy to route your calls.