Mattermost - Mattermost is an open source alternative to Slack.

soundrop - Soundrop is an app that allows you to create your own personalized sound track to keep you focused or relax.

Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.

lofi.co - Interact with a catalog of original animated illustrations to create your custom soundscape, mix nature sounds and lofi music or use our suite of productivity tools.

Slack - A messaging app for teams who see through the Earth!

Vibe City FM - Non-stop & regularly updated selection of chill music