Kickstarter - Kickstarter is the world's largest funding platform for creative projects. A home for film, music, art, theater, games, comics, design, photography, and more.
Tipping - Ridiculously quick tip calculator
FreeFunder - Free crowdfunding platform with no platform fee and donates to your fundraiser based on shares!
Calcbot for Apple Watch - Calculate, convert, and split tips from your wrist
Give - A WordPress plugin for easily collecting donations
Toothpick - Calculate your tip based on the server's gender