💻 Developer Tools

20 open source developer tools projects reviewed and verified.

Gitea✓ Verified★ 46K
Lightweight self-hosted Git service. Painless to set up, fast, and easy to use.
Developer ToolsMITSelf-Hosted
Alt: GitHub, GitLabGo
Appwrite✓ Verified★ 46K
Open source backend-as-a-service. Auth, databases, storage, functions, and messaging.
Developer ToolsBSD-3-ClauseSelf-Hosted
Alt: Firebase, SupabaseTypeScript
Supabase✓ Verified★ 75K
Open source Firebase alternative. Postgres database, auth, realtime, storage, and edge functions.
Developer ToolsApache-2.0Self-Hosted
Alt: FirebaseTypeScript
Directus✓ Verified★ 28K
Instant REST & GraphQL API for any SQL database. Beautiful no-code data studio.
CMS & WebsitesBSL-1.1Self-Hosted
Alt: Contentful, StrapiTypeScript
Woodpecker CI✓ Verified★ 4K
Simple yet powerful CI/CD engine. Container-native pipelines with multi-platform support.
DevOps & CI/CDApache-2.0Self-Hosted
Alt: GitHub Actions, JenkinsGo
Godot Engine✓ Verified★ 93K
Free and open source game engine. Create 2D and 3D games with a feature-rich editor.
GamingMIT
Alt: Unity, Unreal EngineC++
Coolify✓ Verified★ 36K
Self-hostable Heroku/Vercel alternative. Deploy apps, databases, and services with ease.
DevOps & CI/CDApache-2.0Self-Hosted
Alt: Heroku, Vercel, NetlifyPHP
TensorFlow✓ Verified★ 188K
End-to-end open source machine learning platform. Build and deploy ML models at scale.
AI & Machine LearningApache-2.0
Alt: PyTorch, JAXC++ / Python
PyTorch✓ Verified★ 86K
Open source machine learning framework. Dynamic computation graphs and Pythonic deep learning.
AI & Machine LearningBSD-3-Clause
Alt: TensorFlow, JAXC++ / Python
Hugging Face Transformers✓ Verified★ 140K
State-of-the-art NLP and ML models. Thousands of pretrained models for text, vision, and audio.
AI & Machine LearningApache-2.0
Alt: OpenAI API, Google Vertex AIPython
LangChain✓ Verified★ 98K
Framework for building LLM-powered applications. Chains, agents, and retrieval-augmented generation.
AI & Machine LearningMIT
Alt: LlamaIndex, Semantic KernelPython
OpenCV✓ Verified★ 80K
Open source computer vision and image processing library. Real-time vision for any platform.
AI & Machine LearningApache-2.0
Alt: MATLAB Image ProcessingC++
ONNX✓ Verified★ 18K
Open neural network exchange format. Interoperable AI models across frameworks and hardware.
AI & Machine LearningApache-2.0
Alt: TensorFlow SavedModel, TorchScriptC++ / Python
OWASP ZAP✓ Verified★ 13K
Web application security scanner. Find vulnerabilities in your web apps during development and testing.
Security & AuthApache-2.0
Alt: Burp Suite, AcunetixJava
Strapi✓ Verified★ 65K
Open source headless CMS. Build powerful APIs in minutes with a customizable admin panel.
CMS & WebsitesMITSelf-Hosted
Alt: Contentful, SanityTypeScript
JAX✓ Verified★ 31K
High-performance numerical computing. Composable transformations for autograd, JIT, and vectorization.
AI & Machine LearningApache-2.0
Alt: PyTorch, TensorFlowPython / C++
LlamaIndex✓ Verified★ 38K
Data framework for LLM applications. Connect custom data sources to large language models.
AI & Machine LearningMIT
Alt: LangChain, HaystackPython
Haystack✓ Verified★ 18K
NLP framework for building search, question answering, and conversational AI pipelines.
AI & Machine LearningApache-2.0
Alt: LangChain, LlamaIndexPython
MLflow✓ Verified★ 19K
ML lifecycle platform. Experiment tracking, model registry, deployment, and reproducibility.
AI & Machine LearningApache-2.0Self-Hosted
Alt: Weights & Biases, NeptunePython
DVC✓ Verified★ 14K
Data Version Control. Git for data and ML models. Track experiments and build pipelines.
AI & Machine LearningApache-2.0
Alt: Git LFS, PachydermPython