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.
Sup! Standup Bot - The complete stand-up and follow-up bot
AND CO - AND CO helps freelancers, entrepreneurs and other small businesses run their business smarter.
Hive - Seamless project management and collaboration for your team.
Coworkly - Coworkly is a free tool for creative contractors to put freelance bookings, payments, & work goals on auto-pilot!It's a portfolio, scope of work, & invoice bundled into one simple flow that allows clients to reserve your time in a few easy steps.
Asana - Asana project management is an effort to re-imagine how we work together, through modern productivity software. Fast and versatile, Asana helps individuals and groups get more done.