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.)
Federated free open source communications platform with support for messaging and calling. The platform has many different apps available with the most popular being Element (formerly known as Riot).
Developing the next generation of Fediverse platforms, led by Christine Lemmer-Webber who co-authored the ActivityPub technical standard which the current Fediverse is built upon. (Previously known as the Spritely Project.)
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):
Fediverse address (blog):
Develops and maintains the XMPP standard for instant messaging and voice and video calls. It’s a free open federated standard, so anyone can set up their own server or write their own app. (XMPP used to be known as Jabber.)
Free open source end-to-end encrypted messaging system that works through email. This means if you both have Delta apps running you can chat in encrypted mode, but even people without Delta can chat with you through their normal email account. It’s available for Android, iOS, Linux, Mac and Windows.
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).