Jami

Free open source end-to-end encrypted peer-to-peer calling and messaging app. It supports video calls, audio, messaging and has a Skype-style interface. It has apps for all major platforms including Android, iPhone/iPad, Linux, Mac and Windows.

Fediverse address:
@Jami@mstdn.io

PeerTube

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 and the new videos will appear in your timeline just like normal posts. You can also interact with them within your timeline, for example replies to a PeerTube video within Mastodon will turn into comments under that same video on PeerTube.

Fediverse address:
@peertube@framapiaf.org

Manyverse

A new kind of social network which works peer-to-peer, and all personal data is stored locally on your computer or phone. It’s part of the Scuttlebutt network, but has a user-friendly interface, features and branding that are aimed at a more mainstream audience. There are free open source apps for iOS, Android, Linux, Mac and Windows.

Fediverse address:
@manyver_se@fosstodon.org

Briar

Free open source end-to-end encrypted peer-to-peer messaging system for Android and Linux which can be used online through Tor, or locally through wifi or bluetooth. Because it has local support it can be used even if the internet is shut down or broken, for example at demonstrations or in disaster zones.

Fediverse address:
@briar@fosstodon.org