All Open Source Apps

Self-hosted PaaS that deploys apps and databases on your own VPS using Docker, Traefik, and multi-build-system orchestration

The offline-first diagram editor that puts security above all else — no account, no data leaving your machine, no compromises.

Turn any website into clean, LLM-ready data with a single API call — no proxy headaches, no scraping complexity.

Git, but better — a modern version control client with stacked branches, parallel workflows, unlimited undo, and first-class support for AI-powered development.

Open source observability platform that unifies logs, traces, metrics, and session replays on ClickHouse — now the core of ClickStack.

Open-source, fully-scriptable data ingestion engine that streams events from web, apps, and APIs to any data warehouse in real time.

Define your software architecture as code and get always up-to-date, interactive C4 diagrams generated automatically from a DSL.

The forever-free, ad-free, open-source chess server powering millions of real-time games, AI analysis, puzzles, and tournaments worldwide.

A privacy-first, self-hosted AI research notebook with 18+ model providers, multi-speaker podcast generation, and full REST API—your open-source alternative to Google Notebook LM.

OpenAI's open-source CLI coding agent that reads, edits, and runs code in your terminal using natural language prompts.

A fully open-source AI coding agent built for the terminal, with a TUI, desktop app, web client, plugin system, and SDK — one of the most-starred AI coding agents on GitHub.

Born out of Y Combinator's S2023 batch, ParadeDB is a Postgres extension that delivers Elasticsearch-quality BM25 search and real-time analytics without a separate search cluster to manage.

Postgres-native ETL that streams change data capture in real time to Snowflake, BigQuery, ClickHouse, S3, and Kafka — up to 10x faster than general-purpose pipelines, managed through a familiar Postgres SQL interface.

Free, open-source visual website builder that exports clean HTML/CSS — no lock-in, no subscription, host anywhere

Skyvern (YC S2023) automates browser-based workflows by pairing LLMs with computer vision, letting agents click, fill, and extract data on sites they've never seen, without brittle XPath selectors that break on every layout change.

An open source, Google Zanzibar-inspired authorization database that models permissions as relationships and evaluates fine-grained access checks at massive scale with single-digit millisecond latency.

End-to-end encrypted notes and files — private by design, built to last, and fully self-hostable.

Open-source agentic security automation platform that runs AI agents and durable workflows at scale with sandboxed execution.

Open-source Flutter Matrix client with federated identity lookup, Vodozemac E2EE, and enterprise white-labeling for decentralized team communication.

Run and fine-tune LLMs, diffusion, audio and embedding models on your own hardware, from a native desktop app, a browser UI, or a Python library.

Privacy-first, opinionated feed reader built for speed and control—no bloat, no trackers, no JavaScript overhead.

Unofficial Bitwarden-compatible server in Rust — run the full Bitwarden ecosystem on a Raspberry Pi using every official client you already have, without the multi-container overhead.

Self-hosted WakaTime-compatible coding statistics backend that gives developers full control over their coding activity data.

Self-hosted personal subscription tracker with multi-currency support, household member management, and AI-powered savings recommendations.