A really slick looking theme for jQuery Mobile that’s very flat (no shadows etc).

Brackets

Open-source code editor, built with the web for the web.

FRAPI

“FRAPI is a high-level API framework that puts the “rest” back into RESTful. Use it to power your web apps, mobile services, and legacy systems.”

“SelfControl is an OS X application which blocks access to incoming and/or outgoing mail servers and websites for a predetermined period of time.”

Open source status board/app that gives you details on different modules of an API/website/etc. Created by the Twilio guys.

“Appleseed is the first open source, fully decentralized social networking software.”

Distributed social network where you install your own “seed” which communicates with others.

“Flask is a microframework for Python based on Werkzeug, Jinja 2 and good intentions. And before you ask: It’s BSD licensed!”

Complete book about OSS, how to manage community, etc etc.

“Simple shell utility to convert html to pdf using the webkit rendering engine, and qt.”