Designer Mill - Collection of Best Free Design Resources
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.
Boooom - Design management and leadership jobs.
Notion - All-in-one workspace. One tool for your whole team. Write, plan, and get organized.
Facebook Design Resources - A collection of free resources made by designers at Facebook
Slack - A messaging app for teams who see through the Earth!