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Open-source AI developer tools
39 open-source ai developer tools tools. AI Developer Tools tools listed as Free because they are open-source projects you can download and run. Check each project's license, and note that hosting and model costs may still apply.
How to read this page. The tools are grouped by category and are not ranked. Pricing labels come from vendors' own pages when we could confirm them. Always verify plans and limits on the vendor's site.
AI Developer Tools (39)
| Tool | What it does | Pricing | Link |
|---|---|---|---|
| Aim | Open-source experiment tracker and AI observability tool. | Free | Official site |
| Axolotl | Open-source tool for fine-tuning language models. | Free | Official site |
| Chainlit | Open-source Python framework for building conversational AI frontends. | Free | Official site |
| DeepSpeed | Microsoft deep learning optimization library for training and inference at scale. | Free | Official site |
| Distilabel | Framework for synthetic data generation and AI feedback. | Free | Official site |
| Docling | Open-source toolkit for converting documents into structured formats for AI. | Free | Official site |
| DVC | Open-source data and model versioning for ML projects. | Free | Official site |
| Feast | Open-source feature store for machine learning. | Free | Official site |
| Gradio | Python library for building and sharing web demos of machine learning models. | Free | Official site |
| Guidance | Microsoft-originated library for controlling LLM outputs. | Free | Official site |
| Instructor | Library for getting structured outputs from language models. | Free | Official site |
| Jupyter AI | Open-source generative AI extension for JupyterLab with a chat interface and notebook magics. | Free | Official site |
| Kedro | Open-source Python framework for reproducible data science pipelines. | Free | Official site |
| Kiln | Free desktop app for building AI tasks, synthetic datasets, evals and fine-tunes. | Free | Official site |
| KServe | Open-source model serving on Kubernetes. | Free | Official site |
| llama.cpp | Open-source C/C++ library for running language models efficiently on local hardware. | Free | Official site |
| LlamaFactory | Open-source toolkit with a web UI for fine-tuning 100+ LLMs and vision-language models. | Free | Official site |
| Ludwig | Open-source declarative framework for building custom AI models and fine-tuning LLMs. | Free | Official site |
| Metaflow | Open-source framework for building and managing ML and AI systems. | Free | Official site |
| MinerU | Open-source tool that converts PDFs into machine-readable Markdown and JSON. | Free | Official site |
| MLflow | Open-source platform for managing the machine learning and GenAI lifecycle. | Free | Official site |
| MLX | Apple open-source array framework for machine learning on Apple silicon. | Free | Official site |
| NeMo Guardrails | NVIDIA open-source toolkit for adding programmable guardrails to LLM apps. | Free | Official site |
| OpenCV | Open-source computer vision library. | Free | Official site |
| Oumi | Open platform for building, training and improving specialized AI models and agents. | Free | Official site |
| Outlines | Library for constraining language model output to defined structures. | Free | Official site |
| PEFT | Hugging Face library for parameter-efficient fine-tuning. | Free | Official site |
| Ragas | Open-source toolkit for evaluating retrieval-augmented generation applications. | Free | Official site |
| Ray | Open-source framework for scaling Python and AI workloads. | Free | Official site |
| sentence-transformers | Python library for text and image embeddings. | Free | Official site |
| SGLang | Open-source fast serving framework for large language and vision-language models. | Free | Official site |
| spaCy | Open-source library for industrial-strength natural language processing in Python. | Free | Official site |
| Streamlit | Python framework for building data and AI web apps. | Free | Official site |
| TensorBoard | Open-source visualization toolkit for machine learning experiments. | Free | Official site |
| torchtune | PyTorch library for fine-tuning LLMs. | Free | Official site |
| Transformers | Hugging Face library of pretrained models for text, vision, audio and multimodal tasks. | Free | Official site |
| TRL | Hugging Face library for post-training LLMs with SFT, DPO and RL. | Free | Official site |
| TruLens | Open-source library for evaluating and tracing LLM apps and agents. | Free | Official site |
| vLLM | Open-source high-throughput inference engine for large language models. | Free | Official site |