The open-source building blocks behind every aspect of the system, grouped by function, with links.
The open-source projects behind every layer of the system, grouped by what they do. Everything here is self-hostable — no proprietary lock-in.
| Project | Language | What it does |
|---|---|---|
| temporalio/temporal | Go | Durable execution engine for reliable, retryable long-running workflows. Powers post scheduling in our hub. |
| n8n-io/n8n | TypeScript | Fair-code workflow automation with 400+ integrations & AI nodes. Popular visual glue for posting pipelines. |
| node-red/node-red | JavaScript | Flow-based low-code wiring of APIs and services. |
| windmill-labs/windmill | Rust/TypeScript | Turn scripts into workflows, schedules & internal UIs. |
| Project | Language | What it does |
|---|---|---|
| bluesky-social/atproto | TypeScript | Official AT Protocol packages/SDK (@atproto/api). The basis of our Bluesky posting. |
| bluesky-social/social-app | TypeScript | Reference Bluesky client app (web + React Native) — good API usage patterns. |
| Project | Language | What it does |
|---|---|---|
| halcy/Mastodon.py | Python | Python wrapper for the full Mastodon API. |
| neet/masto.js | TypeScript | Universal Mastodon API client (REST + streaming). |
| Project | Language | What it does |
|---|---|---|
| knadh/listmonk | Go | High-performance self-hosted newsletter & mailing-list manager. |
| mautic/mautic | PHP | Open-source marketing automation — campaigns, drip, lead scoring. |
| pentacent/keila | Elixir | Self-hosted newsletter tool (Mailchimp alternative). |
| Project | Language | What it does |
|---|---|---|
| umami-software/umami | TypeScript | Privacy-focused, lightweight web analytics. |
| plausible/analytics | Elixir | Simple, privacy-first Google Analytics alternative. |
| matomo-org/matomo | PHP | Full-featured GA alternative with goals, funnels, attribution. |
| PostHog/posthog | Python/TS | Product analytics, funnels, session replay, feature flags. |
| Project | Language | What it does |
|---|---|---|
| dubinc/dub | TypeScript | Modern link-management platform with click analytics & UTM builder. |
| thedevs-network/kutt | TypeScript | Self-hosted URL shortener with stats and API. |
| shlinkio/shlink | PHP | Self-hosted URL shortener with rich visit analytics & REST API. |
| Project | Language | What it does |
|---|---|---|
| louislam/uptime-kuma | JavaScript | Self-hosted uptime monitor with status pages & alerts. |
| TwiN/gatus | Go | Developer-oriented health dashboard, config-as-code. |
| Project | Language | What it does |
|---|---|---|
| binwiederhier/ntfy | Go | Simple pub/sub push notifications via HTTP. We use it for failure alerts. |
| caronc/apprise | Python | One library to push notifications to 100+ services. |
| Project | Language | What it does |
|---|---|---|
| microsoft/playwright | TypeScript | Cross-browser automation & testing — automates OAuth/connect flows. |
| puppeteer/puppeteer | TypeScript | Headless/headful Chrome control API. |
| browser-use/browser-use | Python | Let LLM agents drive a real browser. |
| Project | Language | What it does |
|---|---|---|
| langchain-ai/langchain | Python | Framework for building LLM apps & chains. |
| langgenius/dify | TypeScript/Python | Self-hosted LLM app platform (agents, RAG, workflows). |
| FlowiseAI/Flowise | TypeScript | Drag-and-drop builder for LLM flows & agents. |
| run-llama/llama_index | Python | Data framework for RAG / context-augmented LLM apps. |
| crewAIInc/crewAI | Python | Framework for orchestrating role-playing multi-agent crews. |
| ollama/ollama | Go | Run open LLMs locally with a simple API — no per-token API cost. |
| Project | Language | What it does |
|---|---|---|
| towfiqi/serpbear | TypeScript | Self-hosted Google keyword rank tracker with GSC integration & JSON API. |
| ekalinin/sitemap.js | TypeScript | Streaming sitemap-generating framework + CLI for Node. |
Social publishing / scheduling hubs