HEY - Email at its best, new from Basecamp.
M+ 1m - Download and install the M+ 1m free font family by M+ Fonts as well as test-drive and see a complete character set.
Horde - Horde Groupware is a free, enterprise ready, browser based collaboration suite.
Inconsolata - OSX, Productivity, Design, Typography, powerline, and Fonts
InstAddr - Disposable email address application.
Bitstream Vera Sans Mono - Bitstream Vera Sans Mono Font | dafont.com