Tag
7 catalogue entries use this topic; each Project's license policy is labeled separately.
Local-first block notes with backlinks, sync, and flashcards
SiYuan is a local-first, privacy-first note-taking app that organizes Markdown notes as linked content blocks with backlinks, databases, and end-to-end encrypted sync.
Self-hosted secure team chat for mission-critical organizations
Rocket.Chat is a self-hosted team chat platform with a Slack data importer, end-to-end encryption, and cloud, on-premises, or air-gapped deployment.
Private messenger with end-to-end encrypted messaging and calls
Signal is a free, nonprofit messenger with end-to-end encrypted texts, calls, and group chats across Android, iOS, and desktop.
End-to-end encrypted team messenger built on Matrix
Element is an end-to-end encrypted messenger for teams and communities, built on the open Matrix protocol with chat, voice and video calls.
Peer-to-peer encrypted team chat over Tor with no servers
Quiet is a peer-to-peer team chat app that syncs encrypted messages directly between member devices over Tor, with no central server.
Post-quantum encrypted storage, sync, and sharing you can self-host
Peergos is a peer-to-peer, end-to-end encrypted drive for storing, syncing, and sharing files, with a self-hostable open-source server.
Open-source password manager with P2P sync and no cloud
PearPass is an open-source password manager that keeps encrypted vaults only on your devices and syncs them over peer-to-peer connections with no cloud servers.