Tweetbot - Sync your timeline across your iPhone, iPad, and Mac. Mute tweets by user, hashtag, tweet source, or keywords (including regex). 3rd Party support for image, video, read later, and timeline sync services.
Hyperspace Mastodon client - Hyperspace offers a clean, fast and responsive client for the Mastodon social network
TweetDeck - TweetDeck is your personal browser for staying in touch with what’s happening now.
Pinafore - An alternative web client for Mastodon, focused on speed and simplicity.
HootSuite - Enhance your social media management with Hootsuite, the leading social media dashboard. Manage multiple networks and profiles and measure your campaign results.
Megalodon - A fork of official Mastodon Android app which include new additional features.