Directory

All Open Source Apps

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

747 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.

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98
Repo Health
81
Technical
77
Dependency
Built with
JavaScript 98%
Updated 3 days ago
Python
89%
Apache 2.0

Apache Airflow

Data Engineering

46,995

Define, schedule, and monitor complex data workflows as Python code — with a powerful UI, 80+ provider integrations, and battle-tested scalability across thousands of production deployments.

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96
Repo Health
89
Technical
64
Dependency
Built with
Python 89%
Updated 2 days ago
Java
100%
Apache 2.0

CrateDB

Analytics · Databases

4,441

Distributed SQL database for real-time analytics at scale

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96
Repo Health
76
Technical
79
Dependency
Built with
Java 100%
Updated 3 days ago
Java
58%
Apache 2.0

Kestra

Automation · Data Engineering · Devops

28,388

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

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93
Repo Health
81
Technical
72
Dependency
Built with
Java 58%
TypeScript 26%
Vue 15%
Updated 5 days ago
Java
93%
Apache 2.0

QuestDB

Analytics · Databases

17,360

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.

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91
Repo Health
86
Technical
67
Dependency
Built with
Java 93%
Updated 2 days ago
Python
65%
Apache 2.0

WrenAI

AI Agents · Analytics · Data Engineering

17,763

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.

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90
Repo Health
91
Technical
69
Dependency
Built with
Python 65%
Rust 32%
Updated 5 days ago
Python
62%
Apache 2.0

marimo

Data Engineering · Developer Tools

22,918

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.

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89
Repo Health
91
Technical
65
Dependency
Built with
Python 62%
TypeScript 37%
Updated 3 days ago
Python
88%
Apache 2.0

sirchmunk

AI Development · Data Engineering

1,351

Drop your files and search them instantly — no vector DB, no indexing pipeline, just raw data queried by a self-evolving intelligence layer.

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84
Repo Health
70
Technical
72
Dependency
Built with
Python 88%
TypeScript 11%
Updated 1 weeks ago
Python
73%
Apache 2.0

timesfm

AI Development · Analytics

33,870

A pretrained decoder-only foundation model by Google Research that delivers zero-shot time series forecasting with calibrated quantile prediction intervals — no training required.

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78
Repo Health
81
Technical
71
Dependency
Built with
Python 73%
HTML 14%
Jupyter Notebook 12%
Updated 2 weeks ago
Python
59%
Apache 2.0

argilla

AI Development · Data Engineering

5,125

Collaborate on high-quality AI training data with a self-hosted annotation platform built for LLMs, NLP, and multimodal models.

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65
Repo Health
81
Technical
61
Dependency
Built with
Python 59%
Jupyter Notebook 21%
Updated 1 weeks ago
Python
94%
Apache 2.0

SWIRL

Data Engineering · Databases · Search

3,047

Federated AI search and RAG across 100+ enterprise sources—no data extraction, no vector database required.

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62
Repo Health
83
Technical
65
Dependency
Built with
Python 94%
Updated 4 days ago
Java
34%
Apache 2.0

Enso

Analytics · Data Engineering · Low Code Platforms

7,441

A visual and textual programming platform for data prep and analysis where the node graph and the underlying Enso code are always perfectly in sync, built by an Alteryx co-founder on a GraalVM engine.

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59
Repo Health
90
Technical
61
Dependency
Built with
Java 34%
TypeScript 27%
Scala 26%
Updated 1 months ago

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