Mattermost - Mattermost is an open source alternative to Slack.
Kiwi.com - Find and book the best low-cost flights all around the world
Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
Flymble LIVE - Book a flight for 1/10 of the cost upfront.
Slack - A messaging app for teams who see through the Earth!
LuckyTrip - A trip in one tap. The easiest way to find great trips.