Bundlify - Simple invoice tool and Stripe payment wrapper for freelancers.
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.
Freelancify - Self-Management for freelancers
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.
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.
Jira - The #1 software development tool used by agile teams. Jira Software is built for every member of your software team to plan, track, and release great software.