Private company which develops free open software for instant messaging through XMPP. They have a number of XMPP projects including server software and apps for MacOS (Beagle), iOS (Siskin) and Android (Stork).
Fediverse address:
@tigase@fosstodon.org
Online fork of the LibreOffice productivity suite aimed at businesses, including long term tech support, admin tools, smartphone apps and cloud collaboration.
Fediverse address:
@CollaboraOffice@mastodon.social
Its development company, Collabora, is one of the biggest upstream contributors to LibreOffice’s source code, and has a close relationship with the FOSS community.
Fediverse address:
@collabora@floss.social
Free open source collaborative markdown editor. HedgeDoc is web-based and you can host it yourself if you want to. (HedgeDoc was previously known as CodiMD.)
Fediverse address:
@hedgedoc@fosstodon.org
Free open source project creating a question & answer platform with social aspects. It can be self-hosted, and their long term roadmap includes federation (though it isn’t federated yet).
Fediverse address:
@retrospring@fosstodon.org
Free open source online platform for organising community activism and volunteer initiatives such as food sharing etc. Anyone can set up their own Karrot site, or join an existing site.
Fediverse address:
@karrot@fosstodon.org
Free open source 3D game engine, for creating Minecraft-style games and worlds. There’s a large range of game modes and mods available, including online multiplayer. It’s available for Linux, Mac, Windows, BSD and Android.
Fediverse address:
@Minetest@fosstodon.org
A free open source live streaming platform with built in chat, it’s like a libre alternative to Twitch. It’s now part of the Fediverse so you can follow OwnCast accounts from Mastdon etc. When an OwnCast account goes live, people who follow it will see a message appear in their timeline.
Fediverse address:
@owncast@fosstodon.org
Website from the creator of Fedi.Directory (that’s me!) which helps non-technical people create their own online services through managed hosting providers. Managed hosting means the hosting company does all the technical stuff behind the scenes, but you own and run the service. This allows anyone to make their own Fediverse servers, personal clouds, music streaming services and much more.
Fediverse address:
@homegrown@social.growyourown.services
Free open source alternative to Linktree, which helps people publish links to all their profiles and sites on a single page.
Fediverse address:
@linkstack@mstdn.social
Fediverse server type with a Facebook-style interface and no character limit. It is extremely flexible and lets you follow many kinds of accounts in a single timeline including the Fediverse, RSS, Twitter and others.
Fediverse account:
@news@forum.friendi.ca
Free open source federated audio platform, which allows people to discover, follow and share music and podcasts on the Fediverse.
Fediverse address:
@funkwhale@social.funkwhale.audio
German language site featuring tutorials for self-hosting your own free open source services, and the same site also provides a number of libre online services.
Fediverse address (in German):
@adminforge@kanoa.de
Free open source app that lets you view and search reference materials such as Wikipedia, Gutenberg, StackExchange etc without an internet connection. This can be very useful in remote areas, during temporary outages, or during times of turmoil.
Fediverse address:
@kiwix@mastodon.social
Free open source online project management software, including classic, agile and hybrid management throughout project life cycle.
Fediverse address:
@openproject@fosstodon.org
Free open source alternative to Pocket and other article-saving services. There are apps for Android, iOS, Windows, Linux, Firefox, Chrome, Kindle, Kobo and others. It is also compatible with RSS readers. You can self-host your own instance for free, or use the paid-for flagship instance.
Fediverse account:
@wallabag@social.tcit.fr
Free open source self-hostable personal cloud software for sharing files, collaborative editing, instant messaging, personal music streaming etc.
Fediverse address:
@nextcloud@mastodon.xyz
XMPP-based free open federated messenger project. It aims to make XMPP into a more viable alternative to Whatsapp etc by providing consistency in design and terminology, while still maintaining compatibility with other XMPP apps and servers. (It’s a similar plan to how Mastodon made ActivityPub more mainstream while still being compatible with other ActivityPub server types.)
Fediverse address:
@snikket_im@fosstodon.org
Free open source encrypted platform that allows whistleblowers and activists to contact journalists and NGOs anonymously through the Tor network.
Fediverse address:
@securedrop@fosstodon.org
Popular managed hosting service for creating your own Mastodon server. Managed hosting means you don’t really need any technical knowledge as the hosting company does all the techy stuff behind the scenes for you (including installation, maintenance, upgrades etc).
Fediverse address:
@mastohost@mastodon.social
A new project that aims to combine an open source hardware device with FOSS federated social networks to allow you to physically control your own data, and to operate offline too if you want.
Fediverse address:
@bonfire@indieweb.social
Free open source web analytics software, a privacy-friendly libre alternative to Google Analytics. It allows you to keep track of visits to your website without handing over visitors data to Google. There are third party paid hosting services, or you can self-host it for free.
Fediverse address:
@Matomo@mastodon.social
Manufacturer of open source hardware and components, including low power home server kits, single board computers, DIY laptop kits etc.
Fediverse address:
@olimex@mastodon.social
Free open source federated blogging platform. The interface and options are minimalist, with the focus on reading text with as few distractions as possible. It’s part of the Fediverse, so you can follow WriteFreely blogs from Mastodon etc. You can host a WriteFreely server yourself, or sign up on an existing server.
Fediverse address (main):
@writefreely@writing.exchange
Fediverse address (blog):
@writefreely@blog.writefreely.org
Free open source self-hostable file storage and collaboration platform. This is the project that Nextcloud was forked from, but the original is still going as its own thing.
Fediverse address:
@ownclouders@mastodon.social
Free open source software for running XMPP instant messaging servers, and one of the most popular ways to set up an XMPP server.
Fediverse address:
@prosodyim@fosstodon.org
Photo sharing network on the Fediverse, this is sort of the Fedi’s alternative to Instagram. You can follow people on Pixelfed from Mastodon etc and vice versa.
Fediverse address:
@pixelfed@mastodon.social
Set of specifications and free open source tools to help users get more control over how their phone’s (or computers’s) notifications are handled. There are options for self-hosting notification systems if needed.
Fediverse address:
@unifiedpush@fosstodon.org
Free open source online form system. The developers offer form services hosted on their own website, or you can self-host the software if you prefer.
Fediverse address:
@liberaforms@fosstodon.org
The most popular part of the Fediverse, there are thousands of Mastodon servers with millions of registered users. Mastodon is a microblogging platform where people can post up to 500 characters of text as well as attach images, audio and video.
Fediverse address:
@Mastodon@mastodon.social
A new type of Fediverse server software which runs on cheap lightweight hardware and emphasises user safety and privacy. It supports both allowlists and blocklists, imports of lists from other servers, non-federated servers etc. To keep it lightweight there is no built-in web app at all, it is used entirely through third party apps compatible with the Mastodon API. It’s still in alpha testing but the official account is already running on a GoToSocial instance, and it’s a public alpha so others can have a go too.
Fediverse address:
@gotosocial@superseriousbusiness.org
Unofficial forum for Synology NAS owners and enthusiasts
Fediverse address:
@synoforum@mastodon.social
Free open source self-hostable software forge, a community fork of Gitea supported by Codeberg. Federation of forges through ActivityPub planned.
Fediverse address:
@forgejo@floss.social
Free open source online office suite. There’s an official paid service available, or you can host it yourself for free.
Fediverse address:
@ONLYOFFICE@fosstodon.org
Free open source open world role playing game with voxel graphics, inspired by Cube World and Breath Of The Wild. There are online multiplayer options, and you can host your own server too. It’s available for Linux, Mac and Windows.
Fediverse address:
@veloren@floss.social
Privacy-friendly free open source online office suite. It can be self-hosted, or you can use the official instance. It’s collaborative and anonymous, with “zero knowledge” encryption so no one can access your data except you and those you choose to share with.
Fediverse address:
@cryptpad@fosstodon.org
Free open source federated events platform, designed to provide a privacy-friendly alternative to Facebook Events. It has been designed for activists and volunteer organisations, but anyone can use it. It’s part of the Fediverse, so you can follow Mobilizon accounts from Mastodon etc.
Fediverse address:
@mobilizon@framapiaf.org
A Fediverse video sharing and livestreaming, platform, sort of like YouTube but federated onto lots of independent servers. Because it’s part of the Fediverse, you can follow PeerTube accounts from Mastodon etc. PeerTube accounts can also be followed through RSS.
Fediverse address:
@peertube@framapiaf.org
Linux distribution that makes it easier to create and maintain your own home server. It works on a variety of hardware including older or lower powered computers, and you can also buy it pre-installed on a single board computer.
Fediverse address:
@freedomboxfndn@mastodon.social
Free open source media server suite. Lets you create your own self-hosted streaming services, which can be accessed from computers, mobile apps, TVs etc.
Fediverse address:
@jellyfin@mastodon.online
Version of Linux which makes it as easy as possible to install and maintain your own self-hosted online services. There’s a really easy graphical interface, it works on home servers or remote ones, and it supports older and lower powered computers too.
Fediverse address (main account in English and French):
@yunohost@toot.aquilenet.fr
Fediverse address (video account in English and French):
@yunohost@cinema.yunohost.support