WPMeteor - WordPress service marketplace.
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.
Envato - Join millions and bring your ideas and projects to life with Envato - the world's leading marketplace and community for creative assets and creative people.
Notion - All-in-one workspace. One tool for your whole team. Write, plan, and get organized.
zhaket - Marketplace for wordpress theme and plugin
Slack - A messaging app for teams who see through the Earth!