Soketi is a self-hosted, Pusher-compatible WebSocket server for real-time pub/sub messaging without per-message fees or connection limits. MIT licensed, runs on Node.js or Docker.
Storj is an open source decentralized cloud storage network offering S3-compatible object storage with end-to-end client-side encryption across a global distributed node network. AGPL-3.0 licensed.
Helicone is an open source LLM observability platform that proxies your OpenAI and Anthropic calls to log requests, track costs, detect anomalies, and run prompt experiments in production. Apache 2.0.
Typemill is an open source flat-file CMS that turns Markdown files into structured documentation sites, user manuals, and knowledge bases without a database. MIT licensed; runs on any PHP server.
Gatus is a self-hosted endpoint health monitoring tool that checks services on a schedule, sends alerts via Slack or PagerDuty, and displays a public status page automatically. Apache-2.0 licensed, written in Go.
Digger is an open source CI/CD orchestrator for Terraform and OpenTofu that runs infrastructure workflows inside GitHub Actions or GitLab CI without a dedicated Terraform Cloud instance. Apache-2.0 licensed.
Capgo delivers over-the-air live updates to Capacitor mobile apps without App Store or Google Play review delays. End-to-end encrypted, self-hostable or cloud-hosted. LGPL-3.0 licensed.
Flipt is a self-hosted feature flag tool that stores and evaluates flags on your infrastructure with Git-native definitions and zero evaluation data sent to external services. Apache-2.0 licensed.
Cerbos is an open-source authorization service that externalizes access control policies from application code into versioned, testable YAML rules. Apache 2.0 licensed, deployable as a sidecar or standalone service.
Azimutt is an open source database schema visualizer for exploring, documenting, and analyzing complex schemas with interactive entity-relationship diagrams. MIT licensed, works with relational and document databases.
Jellyfin is an open source media server that streams your movies, TV shows, and music to any device from your own hardware. GPL-2.0 licensed, with no subscription required for remote access.