All Open Source Apps
Every app scored on repo health, technical quality, and dependency risk — before you install anything.
Category3
Language5
Sort:Health Score
Harness Open Source
Code Editors · Developer Tools · Devops
A unified open source DevOps platform combining Git hosting, CI/CD pipelines, cloud development environments, and artifact registries in a single self-hosted system.
Keep
Automation · Devops · Monitoring
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.
marimo
Data Engineering · Developer Tools
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.
Nakama
Developer Tools · Game Development
Open-source game backend server with built-in multiplayer, matchmaking, leaderboards, chat, authentication, and storage — deploy anywhere via Docker or binary.
ntfy
Developer Tools · Marketing
Send push notifications to your phone or desktop from any script or service using a single HTTP PUT or POST—no sign-up required.
SpiceDB
Authentication · Databases · Security
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.
Tracecat
AI Agents · Automation · Security
Open-source agentic security automation platform that runs AI agents and durable workflows at scale with sandboxed execution.
Wakapi
Analytics · Developer Tools
Self-hosted WakaTime-compatible coding statistics backend that gives developers full control over their coding activity data.
Hatchet
AI Development · Automation · Developer Tools
A Postgres-backed orchestration engine for background tasks, AI agents, and durable workflows that replaces Redis queues and multi-datastore durable execution platforms with a single self-hostable service.
Crush
AI Assistants · AI Code Assistants · Developer Tools
Your terminal coding companion — wire up any LLM with LSP intelligence, MCP extensibility, and a skills system that learns your workflow.
Gogs
Developer Tools
The painless self-hosted Git service that runs on anything from a Raspberry Pi to a $5 cloud droplet, delivering GitHub-like workflows as a single Go binary.
Formance Ledger
Databases · Developer Tools · Invoicing Finance
The programmable open source core ledger for fintech — build money-moving applications with atomic multi-posting transactions, account-based modeling, and Numscript, a built-in DSL for financial logic.
Maltrail
Monitoring · Security
Detect malicious network traffic using 47+ live threat feeds, heuristics, and a fat-client reporting dashboard — no commercial stack required.
OSV.dev
Security
Google's open-source vulnerability database that maps CVEs to exact package versions across 50+ ecosystems with a public API and data dumps.
SafeLine
Security
Self-hosted WAF with a custom semantic detection engine and ML-powered threat analysis that blocks web attacks without cloud dependency.
XPipe
Developer Tools · Devops · Networking
A local desktop hub that unifies SSH, Docker, Kubernetes, VMs, and remote desktops into one interface — no agents, no remote setup.
agent-orchestrator
AI Agents · AI Code Assistants · Developer Tools
A local desktop workspace that gives every coding task its own agent, Git branch, and worktree, then tracks tasks, pull requests, CI, and reviews for 27 coding agents on one live Kanban board.
OpenMeter
Developer Tools · Invoicing Finance
Open-source metering and billing engine for AI, agentic, and DevTool monetization — ingest usage events in real time and turn them into accurate invoices automatically.
skrub
Developer Tools
Turn messy real-world dataframes into machine learning features — no manual wrangling required.
Beta9
AI Development · Automation · Data Engineering
Run AI workloads at scale with a Pythonic serverless runtime that handles GPU inference, background jobs, and sandboxes with zero infrastructure overhead.
Cog
AI Development · Developer Tools · Devops
An open-source CLI that packages machine learning models into standard, production-ready Docker containers — no Dockerfile wrangling, no CUDA version hell.
headroom
AI Development · Developer Tools
Compress everything your AI agent reads — tool outputs, logs, RAG chunks, and files — before it reaches the LLM, achieving 60–95% fewer tokens with the same answers.
hoop
Monitoring · Security
A wire-protocol gateway that enforces data masking, command blocking, approval workflows, and full session recording for engineers and AI agents accessing production infrastructure.
OpenSandbox
Developer Tools · Security
Secure, fast, and extensible sandbox runtime for AI agents with multi-language SDKs and Docker/Kubernetes runtimes.