Mattermost - Mattermost is an open source alternative to Slack.
Nomad List - Find the best place to ❤️ live, 👩💻 work, and 💃 play
Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
TourPickr - Explore more than 400 000 hidden tourist places in Europe.
Slack - A messaging app for teams who see through the Earth!
MapMyTrip by TripScout - A simple way to share your travel recommendations