Whalebird - Whalebird is a Mastodon client for desktop application.
FareUpThere - Earn rewards for your feedback on flights
Megalodon - A fork of official Mastodon Android app which include new additional features.
Skyscanner - Skyscanner.com compares over 1000 airlines to find you the cheapest airfares, fast.
Moshidon - Better modification of the official Mastodon for Android app
Eighty App - Convenient travel wishlist app with booking alerts