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.

Sketch Toolbox - A super simple plugin manager for Sketch

Nifty - Manage projects, work, and communications in one place.

Sketch Plugin Manager - Keeping your Sketch plugins up to date.

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.

Sketch Manager - Manage Sketch symbols, text and layer styles easily