UpEffect - Crowdfunding for social good products
Productbox - Talk with fellow product managers about how you do stuff.
Creddon - Tweet for a cause and a sponsor will donate $1 to charity
Joli App - Joli App is a simple app that matches hospitality brands with influencers based on neighbourhood and food style.
Public Design Vault - 500+ design tools for public good, all in one place
Nibble Game - Futuristic, rotary version of the classic Snake and Nibbles games.