All Open Source Apps

A high-performance, open-source time-series database built for financial market data, IoT telemetry, and real-time analytics, combining a zero-GC Java/C++ core with SIMD-accelerated SQL and a WAL-to-Parquet storage engine.

Self-hostable group scheduling polls that eliminate back-and-forth emails and find the best meeting time for everyone.

A privacy-respecting, local-first task manager with built-in timeboxing, Pomodoro timer, and deep integrations for Jira, GitHub, GitLab, and CalDAV — no accounts, no data collection, ever.

Open-source authentication platform you self-host, giving you complete control over user data with zero vendor lock-in.

In-context localization platform that lets developers and translators edit app strings directly in the running application, with AI-powered machine translation and framework SDKs for React, Angular, Vue, and Svelte.

Open-source, self-hosted file manager with collaborative drives, AI-powered summarization, and OnlyOffice document editing for teams who want full data sovereignty.

The open-source feature management platform that lets you ship code to production and control who sees it — without redeploying.

Self-hosted monitoring for every service you run — 23 monitor types, 95 notification channels, live dashboards, and public status pages with no vendor lock-in.

Open source visual development platform with complete CSS control, headless CMS integration, and full infrastructure ownership

Open-source GenBI engine that lets AI agents turn natural-language questions into governed SQL, charts, and shareable dashboards across 20+ data sources — no vendor lock-in, no black-box prompts.

Write, draw, and plan in one infinite canvas — the open-source alternative to Notion and Miro that keeps your data yours.

Open-source reporting platform to build live dashboards from SQL, NoSQL, APIs, and SaaS tools with an AI assistant that creates charts from natural language.

An open-source AI coding agent that lives in your editor and terminal — reads and edits your codebase, runs commands, browses the web, and requires human approval for every action by default.

Fern turns a single OpenAPI, AsyncAPI, or Protobuf definition into type-safe SDKs for nine languages and a hosted API documentation site, all from one CLI and one source of truth.

Open-source GraphQL schema registry and observability platform with breaking change detection, federation support, and CI/CD integration for teams of any size.

Run LLMs 100% locally with full privacy, or connect to cloud AI — your machine, your data, your control.

The open-source AIOps and alert management platform that unifies 130+ monitoring tools into a single pane of glass with AI-powered correlation, deduplication, and workflow automation.

Build, test, and deploy AI agents and RAG workflows visually with native API and MCP server export.

A reactive Python notebook that eliminates hidden state, runs reproducibly, and deploys as a web app or script — stored as pure Python, built for the AI era.

The complete open-source observability platform that replaces PagerDuty, Datadog, Sentry, and StatusPage with a single self-hostable system.

Open-source AI observability platform for tracing, evaluating, and debugging LLM applications with built-in intelligence and MCP support.

Open source payments infrastructure that turns software into a business — subscriptions, usage-based billing, digital products, and merchant-of-record compliance in one platform.

An open-source CLI and library for evaluating and red-teaming LLM applications — replace trial-and-error prompt engineering with systematic evals, vulnerability scanning, and CI/CD integration.

Beautiful, interactive OpenAPI documentation with a built-in offline-first API client and multi-language code generation — all in one open-source platform.