Let’s Move for the $60,000 Apps for Healthy Kids competition. Create innovative, fun and engaging web- or mobile- based games and tools that encourage children directly or through their parents to make more nutritious food choices and be more physically active.

 The NYC BigApps Competition will reward the developers of the most useful, inventive, appealing, effective, and commercially viable applications for delivering information from the City of New York's NYC.gov Data Mine to interested users.

Vim is a popular text editor with a very large community and thousands of available plugins.  Unfortunately, the central clearinghouse for these plugins -- http://www.vim.org/scripts/index.php -- is extremely basic and lacks many useful features such as user reviews, searchable metadata,...

 We all have accepted hundreds of software license agreements. How can we collectively identify, classify and share the unethical terms and conditions. How can we collectively bring light into this legal language which might be used against us wihtout our knowledge? How can we bring this...

Would you like to make a contribution of historical proportions? Here's your chance. This challenge is to create technology that can literally help to reshape our world, liberate hundreds of millions of people from repression, and bring down evil regimes in the process. There are few...