FOSS Communications
Messaging
- XMPP
- Platforms: Movim, Monocles (Movim based)
- Addon Protocols: OTR (realtime), OMEMO (based on Signal's Double Ratchet Algorithm) or OpenPGP
- Signal
- Platforms: Signal
- E-Mail Chat
- Platforms: Delta Chat
- Protocols: PGP, Fallback to Plain Text
Note: PGP doesn't have forward secrecy, and keys could be stolen if users don't store them securely using U2F/FIDO2.
Networking
- ActivityPub
- Platforms: Mastodon, Pixelfed, Calckey, Misskey, Lemmy, Kbin
Privacy
- Proxy
- Protocols: SOCKS4, SOCKS5, Shadowsocks, HTTP, HTTPS, TCP
- VPN
- Protocols: PPP, IPSec, IPSec/L2TP, IPSec/IKEv2, OpenVPN, WireGuard
- Tor
- Components: Entry Relay, Middle Relay, Exit Relay
- Addon Protocols: Bridges, Pluggable Transports (obfs4, Snowflake, fte, meek)
Hardware
Android
- Monocoles.de Ecosystem (forks AOSP, Nextcloud, Conversations, K-9 Mail, SearxNG, etc.)
- Purism Librem
- Purism Liberty
- GTA04 Platform (DIY smartphone)
- Novim Laptop (DIY laptop)