Kosmo - Kosmo helps you automate your freelancing business. Including sending invoices, tracking time, managing projects and more.
UnderPinned - One app to manage your projects from start to finish.
Harlow - Harlow helps freelancers get organized, save time, and look professional with automated invoicing, proposal templates, and much more—all from one centralized hub.
Tapwater - All project details. One place.
Dubsado - Dubsado is flexible — it gives you 5 (now 6!) ways to add new leads. Best of all, 5 ways are automated.
Planning Poker - Open source implementation of planning poker game (collaborative online estimation/voting tool).