Directory

All Open Source Apps

Every app scored on repo health, technical quality, and dependency risk — before you install anything.

746 apps
Updated continuously
JavaScript
98%
Apache 2.0

Parse Server

Databases · Developer Tools

21,405

Self-hosted Backend-as-a-Service for Node.js with REST, GraphQL, real-time Live Query, cloud code, and pluggable adapters for any infrastructure.

View details
98
Repo Health
81
Technical
78
Dependency
Built with
JavaScript 98%
Updated yesterday
Python
58%
Apache 2.0

MLflow

AI Development · Monitoring

28,154

The open source AI engineering platform for debugging, evaluating, monitoring, and optimizing production LLMs and agents at scale.

View details
97
Repo Health
86
Technical
67
Dependency
Built with
Python 58%
TypeScript 33%
Updated today
Java
100%
Apache 2.0

CrateDB

Analytics · Databases

4,440

Distributed SQL database for real-time analytics at scale

View details
96
Repo Health
76
Technical
79
Dependency
Built with
Java 100%
Updated yesterday
Python
57%
Other

Sentry

Analytics · Developer Tools · Monitoring

44,861

Developer-first error tracking and performance monitoring platform with AI-powered root-cause analysis across 20+ languages and frameworks.

View details
95
Repo Health
80
Technical
69
Dependency
Built with
Python 57%
TypeScript 41%
Updated today
Python
100%
Apache 2.0

ClearML

Automation · Devops

6,892

Auto-magical MLOps platform that tracks experiments, versions data, orchestrates pipelines, and serves models with just two lines of code.

View details
94
Repo Health
79
Technical
68
Dependency
Built with
Python 100%
Updated 5 days ago
Java
58%
Apache 2.0

Kestra

Automation · Data Engineering · Devops

28,387

Event-driven orchestration platform for data, AI, and infrastructure workflows — define everything in YAML, run anywhere at scale.

View details
93
Repo Health
81
Technical
72
Dependency
Built with
Java 58%
TypeScript 26%
Vue 15%
Updated 3 days ago
Python
100%
Apache 2.0

Agno

AI Development · Automation · Devops

42,358

Build, run, and manage agent platforms with a full production stack — SDK, runtime, and control plane included.

View details
92
Repo Health
87
Technical
66
Dependency
Built with
Python 100%
Updated 3 days ago
Python
55%
Other

authentik

Authentication · Security

25,757

The self-hosted Identity Provider that replaces Okta, Auth0, and Entra ID with a unified SSO platform supporting SAML, OAuth2/OIDC, LDAP, RADIUS, and WebAuthn.

View details
92
Repo Health
81
Technical
66
Dependency
Built with
Python 55%
TypeScript 36%
Updated today
Python
100%
GPL 3.0

ComfyUI

AI Design Tools · AI Development

135,227

The most powerful node-based AI workflow engine for creating images, video, 3D models, and audio with full control over every generation step.

View details
92
Repo Health
81
Technical
75
Dependency
Built with
Python 100%
Updated yesterday
Python
83%
MIT

LiteLLM

AI Development · Developer Tools

59,740

Open source AI gateway and Python SDK that gives you one OpenAI-compatible interface to call 100+ LLM providers, with built-in routing, cost tracking, guardrails, and virtual keys.

View details
92
Repo Health
81
Technical
69
Dependency
Built with
Python 83%
TypeScript 12%
Updated today
Python
45%
GPL 3.0

MaxKB

AI Development · Knowledge Management

22,880

Build enterprise-grade AI agents with RAG, workflows & multi-modal support

View details
92
Repo Health
68
Technical
66
Dependency
Built with
Python 45%
Vue 37%
TypeScript 17%
Updated today
Java
93%
Apache 2.0

QuestDB

Analytics · Databases

17,359

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.

View details
91
Repo Health
86
Technical
67
Dependency
Built with
Java 93%
Updated today
JavaScript
99%
Other

ChartBrew

Analytics · Databases

4,063

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.

View details
90
Repo Health
83
Technical
64
Dependency
Built with
JavaScript 99%
Updated 4 days ago
Python
63%
BSD 3

Flagsmith

Ab Testing Experimentation · Developer Tools · Devops

6,577

Open-source feature flagging, remote config, and A/B/multivariate testing platform for web, mobile, and server-side apps — self-host or use the hosted SaaS.

View details
90
Repo Health
82
Technical
63
Dependency
Built with
Python 63%
TypeScript 31%
Updated 2 days ago
Python
66%
BSD 3

Healthchecks

Devops · Monitoring

10,368

Open-source cron job and background task monitoring that alerts you when your scheduled jobs go silent.

View details
90
Repo Health
85
Technical
79
Dependency
Built with
Python 66%
HTML 20%
Updated 1 weeks ago
Python
69%
MIT

Langflow

AI Agents · AI Development

155,313

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

View details
90
Repo Health
85
Technical
65
Dependency
Built with
Python 69%
TypeScript 22%
Updated today
Python
49%
Other

Arize Phoenix

Analytics · Devops · Monitoring

11,640

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

View details
90
Repo Health
88
Technical
67
Dependency
Built with
Python 49%
TypeScript 42%
Updated yesterday
Java
97%
Other

SuperTokens

Authentication · Security

15,323

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

View details
90
Repo Health
76
Technical
72
Dependency
Built with
Java 97%
Updated 3 days ago
Python
68%
Other

Baserow

Databases · No Code Platforms

6,011

Open-source no-code platform to build databases, apps, automations, and AI agents — self-hosted or cloud, with full data ownership.

View details
89
Repo Health
84
Technical
68
Dependency
Built with
Python 68%
JavaScript 16%
Vue 11%
Updated yesterday
Python
64%
Other

Keep

Automation · Devops · Monitoring

12,359

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.

View details
89
Repo Health
79
Technical
66
Dependency
Built with
Python 64%
TypeScript 36%
Updated 1 weeks ago
Python
70%
AGPL 3.0

Tracecat

AI Agents · Automation · Security

3,815

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

View details
89
Repo Health
88
Technical
66
Dependency
Built with
Python 70%
TypeScript 28%
Updated yesterday
Python
73%
Apache 2.0

Unsloth

AI Assistants · AI Development

76,586

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.

View details
89
Repo Health
83
Technical
70
Dependency
Built with
Python 73%
TypeScript 21%
Updated 6 days ago
Python
99%
MIT

deepagents

AI Agents · AI Development

29,815

The batteries-included Python agent harness — planning, sub-agents, filesystem, shell, memory, and skills bundled in, built on LangGraph.

View details
88
Repo Health
83
Technical
70
Dependency
Built with
Python 99%
Updated today
Python
45%
MIT

Maltrail

Monitoring · Security

8,609

Detect malicious network traffic using 47+ live threat feeds, heuristics, and a fat-client reporting dashboard — no commercial stack required.

View details
87
Repo Health
59
Technical
100
Dependency
Built with
Python 45%
Rust 39%
Updated yesterday

Join founders buildingwith open source

Opinionated takes, migration guides, cost-saving tips, and insights from the open source ecosystem.

Subscribe on Substack
Join 750+ subscribers