Qvitter - UI for GNU Social that is similar to old twitter designs.
Megalodon - A fork of official Mastodon Android app which include new additional features.
Pinafore - An alternative web client for Mastodon, focused on speed and simplicity.
Whalebird - Whalebird is a Mastodon client for desktop application.
Ivory for Mastodon - A brand new app that brings 10 years of experience building the award-winning Twitter app, Tweetbot, over to Mastodon.
Twidere - Tired of seeing ads and promotions in your timeline, being disrupted by tweets from bots and people...