Trello - Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.
Flare by GoDaddy - Discover, give feedback and support startup ideas
Freedcamp - Our mission is to empower people to achieve great things together. The notion of simple collaboration has been lost and split into hundreds of fragments with countless tools trying to solve each piece.
Generating Product Ideas - Find ideas for your next business or side project
Zenkit - Zenkit is the home you always wanted for your ideas, your projects, your business.
Little Inventors - Turn children's ideas into reality