Creddon - Tweet for a cause and a sponsor will donate $1 to charity
Charity Miles - With the usage of this application you will always able to earn a win-win fitness situation for your goal.
All or Nothing - Competitive donations for causes you care about.
Hedado - Donate like a boss with Hedado!
Public Design Vault - 500+ design tools for public good, all in one place
DEED - On-demand app that makes volunteering easy, social and fun!