Some projects I recognize/like:
- kbin
- bcachefs
- Briar
- Castopod
- Collabora Online and LibreOffice
- CryptPad
- DAVx⁵
- Diesel
- Jitsi
- ForgeFed
- Forgejo
- Friendly Forge Format (F3)
- Funkwhale
- fwupd
- Matrix
- KDE
- Lemmy
- Mastodon
- Misskey
- Nitter
- OpenStreetMap
- Organic Maps
- PeerTube
- Pixelfed
- Pleroma
- postmarketOS
- Searx
- PulseAudio
- Qubes OS
- Redox OS
- Servo
- StreetComplete
- Tauri
- UnifiedPush
- WireGuard
- WordPress ActivityPub
I think they still haven’t officially released it, despite promising years ago. There are community projects like HoloISO