POINT - Awesome link sharing/commenting with friends.
Tab for a Cause - Raise money for charity with each new tab you open
microChange - Snapchat-Venmo hybrid for donating.
Ecosia - Ecosia is a green search engine that donates at least 80% of its profits from search ad revenue and...
The Groundwork - The API for building modern movements
HandUp Campaigns - Assemble your community to donate to those in need