All Open Source Apps

Open-source, embedded vector database built on the Lance columnar format for fast multimodal search across billions of vectors, backed by Y Combinator (W23).

Project management built for ADHD, autism, and dyslexia — simple as Trello, powerful as Jira

Lightning-fast hybrid search engine with AI-powered semantic and full-text retrieval for modern applications.

A fast, secure WebAssembly runtime that runs lightweight containers anywhere — from desktop and cloud to the edge and the browser.

Open source Loom alternative with GPU-accelerated recording, instant share links, AI summaries, and full self-hosting via Docker Compose.

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

Self-hosted event ticketing platform that keeps your attendee data, brand, and revenue completely under your control.

Federated, self-hosted Reddit alternative with full community ownership and no corporate control.

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

Build unlimited, embeddable forms with no code — powered by AI, logic rules, and real-time analytics

All-in-one secure mail and collaboration server covering IMAP, JMAP, SMTP, CalDAV, CardDAV, and WebDAV in a single memory-safe Rust binary.

An open source AI-native proxy that secures, observes, and governs agent-to-LLM, agent-to-tool, and agent-to-agent communication through MCP, A2A, and unified LLM routing.

The open-source, self-hosted status page system that keeps your users informed during outages and maintenance windows.

Self-host your own Google Analytics alternative with heatmaps, session recordings, and full data ownership — no cloud required.

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.

Cloud-native search engine for logs and traces, delivering sub-second search directly on S3, GCS, or Azure Blob storage at a fraction of Elasticsearch's cost.

Embedded KV store built on object storage with zero replication cost

Fast, lightweight, schema-less search backend in Rust — microsecond queries, 30MB RAM, no document storage required.

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.

The world's most popular open-source CMS — now with a built-in AI client SDK, 196 native blocks, and full-site editing for PHP-powered publishing at any scale.

A distributed stream processing engine written in Rust that lets you write SQL to run stateful, real-time computations over data streams with subsecond results.

An incremental data indexing engine that keeps AI agent context perpetually fresh by reprocessing only what changed.

A temporal, verifiable graph database with git-like branching, integrated vector/text/geo search, and RDF/SPARQL/JSON-LD/openCypher support — benchmarked at 10.4x faster than the next database on the full Wikidata dump.

Free, offline, open-source speech-to-text that pastes directly into any app on Windows, macOS, and Linux.