Mastodon is the world's largest free, open source, decentralized microblogging platform. This list contains all those really good tools and services related to Mastodon. The list is updated regularly.
Mastodon starter packs: Get follow recommendations and follow people directly via public lists and community starter packs
FediFollows: Highlighting interesting accounts to follow on Mastodon and the Fediverse, supports 1-click follows.
Whom to Follow: Find accounts you'll love by searching the network of accounts you already follow.
Streetpass: StreetPass will build a list of Mastodon users made up of the websites you go to.
Followgraph: This tool allows you to expand your connection graph and find new people to follow. It works by looking up your "follows' follows".
Social Search: Discover accounts across multiple Mastodon / Fediverse instances.
Trunk categories to csv: This tool uses Trunk to generate a csv file that can be used on Mastodonto follow all the accounts from categories you choose.
Fedi.directory: Interesting accounts to follow on Mastodon and the Fediverse.
Fedified: Reconnecting with your favorite follows is easier than ever.
Fediverse Directory: Directory of people on Fediverse where you can search for other people with common interests to follow
Fediverse.info: Discover people who have mutual interests
Moving to Mastodon from Twitter
Mastodon Flock: Mastodon Flock is a web application that looks for Twitter users on ActivityPub-enabled platforms (the "Fediverse"), such as Mastodon.
MastoMetrics: Track the growth of your Mastodon Account
Fedi Circle Creator: Producing a visual representation of Mastodon interactions with JS
Mastodon Circle Creator: Remember Twitter Circle generator? This is exactly that, but for Mastodon.
Explore your fediverse connections: A data visualization project by Stefan Bohacek that lets you explore your connections across the Fediverse. Supports Mastodon, Friendica, Pleroma/Akkoma, Misskey/Calckey.
FediDB: Fediverse user growth, monthly active users and more.
News and top post aggregators
Feditrends: Aggregating what's trending across the fediverse.
Fediverse Explorer: Browse most recent public posts across the fediverse by hashtag.
FeedSeer News for Mastodon: FeedSeer News allows you to see the most popular links that have appeared in your Mastodon feed over the past day.
Quintessence: Quintessence shows you the top links that the people that you follow on Mastodon tooted or boosted in the last hours and the most notable toots that appeared in your timeline.
Fedi on Fire: Watch every Mastodon/Fediverse post in real-time - filter the firehose.
Embed and sharing tools
Mastopoet: A tool that allows you to capture Mastodon posts as beautiful images and share them across the Internet.
MaPleFeed: Embed Mastodon, Pleroma, Misskey or WordPress Fediverse profile feeds on any web page.
Share Mastodon posts better: By default, the Messages app on iOS and macOS shows a pretty meh preview of Mastodon links. Now you can make them look so much nicer!
List tools
Federike: Federike is a web app made to help you organize your Mastodon using lists.
FediFetcher: A tool for Mastodon that automatically fetches missing replies and posts from other fediverse instances, and adds them to your own Mastodon instance.
Combine.social: An easy and simple solution to missing replies in your home timeline or apparently empty profiles showing up in likes, boosts or follow requests showing up in your notifications.
Tools for server admins
Extended post and account search: A patch for your Mastodon instance that allows proper full-text search of all federated content, including a large range of advanced search operators. A Glitch version is also available.
Backup tools
Mastodon Archive: Archive your statuses, favorites and media using the Mastodon API.