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.
ContractorPlus - Everything home service contractors need in one app.
GoodGantt - The best Gantt chart for Trello®
Payable - Easily manage and pay your contractors
Paws for Trello - The best way to use Trello on your desktop
Bold - Ultra-fast anonymous publishing platform.