The Book of TODO TODO List Self Hosted Chat Options 1. Team & Workspace Chat (Slack / Discord Alternatives) Zulip Description: Threaded stream-and-topic messaging designed for asynchronous communication. Authentik Integration: Native Generic OpenID Connect (OIDC) support included in the free/open-source tier. Mattermost Description: Slack-style team chat, channels, boards, and playbooks. Authentik Integration: Authentik OIDC provider (via GitLab/Generic OAuth2 compatibility) or Authentik ForwardAuth. Rocket.Chat Description: Channel-based team communication, live chat widgets, and omnichannel integrations. Authentik Integration: Native Custom OAuth2 / OIDC provider in the Community edition. 2. Federated & Open-Standard Messaging Matrix Ecosystem (Synapse or Dendrite / Conduit + Element Web or Cinny) Description: Decentralized, end-to-end encrypted messaging network with bridges to Discord, Telegram, Signal, WhatsApp, and Slack. Authentik Integration: Matrix Synapse supports native OpenID Connect (OIDC) for user registration and SSO. XMPP (Prosody + Converse.js) Description: Lightweight, extensible XML-based protocol for instant messaging and presence. Authentik Integration: Authentik LDAP outpost via mod_auth_ldap, or token authentication via mod_auth_oauth2. Modern Web IRC (Ergo + The Lounge) Description: IRCv3 daemon paired with a persistent, modern web client and push notifications. Authentik Integration: The Lounge supports reverse proxy header authentication via Authentik ForwardAuth. 3. Voice, Video & Conferencing (Chat-Adjacent) Jitsi Meet Description: Fully encrypted video conferencing and screen sharing. Authentik Integration: Authentik OIDC / JWT authentication via Prosody backend. Mumble (Murmur Server) Description: Low-latency, high-quality voice communication. Authentik Integration: Authentik LDAP outpost. LiveKit / Element Call Description: WebRTC infrastructure and client for group audio/video calls, integrating directly into Matrix rooms. Authentik Integration: Inherits Synapse OIDC authentication. 4. AI Chat & LLM Interfaces (Chat-Adjacent) Open WebUI Description: Feature-rich web interface for local LLMs, Ollama, API endpoints, RAG, and document chat. Authentik Integration: Native OpenID Connect (OIDC) support with automatic user provisioning and role syncing. LibreChat Description: Multi-provider AI chat interface supporting OpenAI, Anthropic, Gemini, local models, and plugin tools. Authentik Integration: Native OpenID Connect (OIDC) / OAuth2 support. 5. Push Notifications, Webhooks & Alerting Gateways Ntfy Description: HTTP-based pub-sub push notification service to send alerts to desktop/mobile devices. Authentik Integration: Authentik ForwardAuth or upstream header auth. Gotify Description: Simple server for sending and receiving push notifications via WebSockets. Authentik Integration: Authentik ForwardAuth. Apprise API Description: Gateway router to relay notifications to 80+ chat endpoints (Matrix, Discord, Telegram, Slack, etc.). Authentik Integration: Authentik ForwardAuth. 6. Asynchronous Community / Forum Platforms Discourse Description: Modern discussion platform, community forums, and long-form topic threads. Authentik Integration: Native OpenID Connect (OIDC) plugin ( discourse-openid-connect). NodeBB Description: Real-time, socket-driven forum software with built-in instant messaging and notifications. Authentik Integration: nodebb-plugin-oauth2-oidc with Authentik. Summary Comparison Table Service OIDC / SSO Support Mobile Apps (iOS & Android) Site-Wide Custom Emojis Server-Side Custom CSS Global Branding / Theme Config Zulip Yes (Native OIDC) Yes (Official iOS & Android) Yes (Built-in) Yes (Admin UI) High (Logos, default themes) Mattermost Yes (OIDC / OAuth2 / ForwardAuth) Yes (Official iOS & Android) Yes (Built-in) Limited (Plugins) Medium (Colors, brand images) Rocket.Chat Yes (Native OAuth2 / OIDC) Yes (Official iOS & Android) Yes (Built-in) Yes (Admin UI) High (Live CSS, assets, colors) Matrix / Element Yes (Native OIDC via Synapse) Yes (Official Element iOS & Android, FluffyChat, etc.) Yes (MSC2545 packs) Yes ( config.json) Medium (JSON palette, branding) XMPP (Prosody) Indirect (LDAP Outpost / mod_auth_oauth2) Yes (Monomyth, Conversations [Android], Siskin/Monal [iOS]) Client-dependent No N/A (Client-dependent) The Lounge (IRC) Indirect (ForwardAuth) PWA (Progressive Web App on iOS & Android) Limited Yes (CSS files) Medium (Theme packages) Jitsi Meet Yes (OIDC / JWT via Prosody) Yes (Official iOS & Android) No Yes (CSS / Config) High (Watermarks, templates) Mumble Indirect (LDAP Outpost) Yes (Plumble [Android], Mumble [iOS]) No No Low Open WebUI Yes (Native OIDC) PWA (Official mobile web/PWA) Model Avatars / Unicode Yes (Admin UI) High (Logos, banners, CSS) LibreChat Yes (Native OIDC / OAuth2) PWA (Mobile web / PWA) Unicode Config file Medium ( librechat.yaml) Ntfy Indirect (ForwardAuth / Header Auth) Yes (Official iOS & Android) No No Low Gotify Indirect (ForwardAuth) Yes (Official Android, third-party iOS) No No Low Discourse Yes (Native OIDC plugin) Yes (Official Discourse Hub app) Yes (Built-in) Yes (SCSS/Themes) Very High (Full theme engine) NodeBB Yes ( nodebb-plugin-oauth2-oidc) PWA / Third-party apps Yes (Plugin/ACP) Yes (ACP) High (Skins, custom CSS) Random TODO burn backups ensure large local data sources for jellyfin and plex are on the zfs array consolidate logs with a parser music hosting radio stations comms irc server matrix server jabber server backups create backup user new GPG key move rclone configs to backup user chown backups to backup automate to weekly games Steam Headless