Passbolt
Security-conscious IT departments pick Passbolt for its cryptography: every user holds an OpenPGP key pair, and shared credentials are encrypted individually to each recipient's public key - real end-to-end encryption, not a vault password handed around. All crypto runs client-side in the mandatory browser extension (distributed and signed through the Chrome and Firefox stores, deliberately separating the crypto code from the server that stores ciphertext); private keys and passphrases never touch your instance, and the server admin cannot read a single secret. Authentication uses the challenge-based GpgAuth protocol, secrets are digitally signed to verify sender integrity, and metadata encryption extends protection to resource names and URLs. Day to day it behaves like a polished commercial manager: auto-fill and auto-save in forms, strong password generation, anti-phishing protection, TOTP storage, folder hierarchies shared per-user or per-group with fine-grained permissions and instant cryptographic revocation. Native iOS, Android, and desktop apps ship alongside a JSON API, CLI, and SDKs for CI/CD secret retrieval and rotation. The PHP server runs on MariaDB and is AGPL-licensed open source - including the paid tiers' codebase - with published security audits.
PeerTube
The fediverse's answer to YouTube comes from French non-profit Framasoft: PeerTube is a TypeScript/Angular video platform where hundreds of independently operated instances federate over ActivityPub into one network. Videos you publish are discoverable across the whole video fediverse, and viewers can follow your channels from Mastodon or any ActivityPub platform - or plain RSS - without needing an account on your instance. The namesake innovation attacks video hosting's core cost problem: alongside HLS delivery, an optional WebRTC-based P2P layer lets concurrent viewers' browsers share video segments with each other, so a video going viral distributes its own bandwidth demand instead of crushing your server; instance redundancy extends this by letting friendly instances cache each other's videos. Livestreaming is first-class - stream via OBS or any RTMP software, host permanent streams, enable replays, and interact through live chat. Creators get channels, playlists, analytics, built-in video editing (trim, watermark), and an embeddable player for any website. There are no ads, no data mining, and no recommendation algorithm engineered for watch-time - the project's explicit design stance. Admins control federation policy, P2P settings, and theming; a plugin system extends the rest. AGPL-licensed, 300+ contributors, in active development since 2015.