DejaGnu - DejaGnu is a framework for testing other programs.
NatGeo NewTab - Displays the NatGeo Photo of the Day on opening a new tab
Expect - Expect is a tool for automating interactive applications such as telnet, ftp, passwd, fsck, rlogin...
Minimo - An elegant, simplified new tab page
Check - Check is a unit testing framework for C, which runs on environments such as GNU/Linux, GNU/Hurd, BSD, and Mac OSX.
Mustsee - Discover the world’s most beautiful places