Deepnote - A collaboration platform for data scientists

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.

Gyana - Intuitive easy-to-use report and dashboard tool to stop wasting time on repetitive and tedious tasks.

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.

Cron - Cron Calendar.

Basecamp - A simple and elegant project management system.