Nifty - Manage projects, work, and communications in one place.
Freelancer Stack - Curated directory of tools used by 10,000+ freelancers
UnderPinned - One app to manage your projects from start to finish.
Side Hustle Stack - A resource to find platform-based work
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.
Bonsai - One platform to streamline your entire business