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Open source repos that use Ray

10 public repos that SeeRepo read use Ray. It's used most with FastAPI, AIOHTTP, and uvicorn.

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Used most with

  • FastAPI7 repos
  • uvicorn4 repos
  • torch3 repos
  • matplotlib3 repos
Ray10 repos
  • AIOHTTP6 repos
  • Hugging Face3 repos
  • transformers3 repos
  • Redis2 repos

The repos, by stars

  1. 1
    vllm-project/vllm

    A high-throughput and memory-efficient inference and serving engine for LLMs

    Python+10296.8kAI 14%
  2. 2
    run-llama/llama_index

    LlamaIndex is the document processing platform for AI

    Python+27552.9kAI 0.2%
  3. 3
    ray-project/ray

    Ray is an AI compute engine. Ray consists of a core distributed runtime and a set of AI Libraries for accelerating ML workloads.

    Python+33244.3kAI 3.7%
  4. 4
    hpcaitech/ColossalAI

    Making large AI models cheaper, faster and more accessible

    Python+4641.4kAI 0.3%
  5. 5
    PrefectHQ/prefect

    Prefect is a workflow orchestration framework for building resilient data pipelines in Python.

    Python+4624.1kAI 9.7%
  6. 6
    modelscope/ms-swift

    Use PEFT or Full-parameter to CPT/SFT/DPO/GRPO 600+ LLMs (Qwen3.8, DeepSeek-V4, GLM-5.1, InternLM3, Llama4, ...) and 300+ MLLMs (Qwen3-VL, Qwen3-Omni, InternVL3.5, Ovis2.5, GLM5.3, Gemma4, Llava, Phi4, ...) (AAAI 2025).

    Python+2516.1kAI 0.3%
  7. 7
    LMCache/LMCache

    LMCache: Supercharge Your LLM with the Fastest KV Cache Layer

    Python+3212.3kAI 4%
  8. 8
    skypilot-org/skypilot

    The AI Compute Platform for frontier teams. SkyPilot turns fragmented AI compute into one AI supercomputer, so frontier AI teams build custom intelligence faster.

    Python+610.8kAI 16.4%
  9. 9
    hydra-ecosystem/hydra

    Hydra is a framework for elegantly configuring complex applications

    Python+610.7kAI 0.4%
  10. 10
    OpenRLHF/OpenRLHF

    An Easy-to-use, Scalable and High-performance Agentic RL Framework based on Ray (PPO & DAPO & REINFORCE++ & VLM & TIS & vLLM & Ray & Async RL)

    Python+1510.2kAI 1.8%

Frequently asked questions

What is the most popular open source repo that uses Ray?
vllm-project/vllm, with 96,790 stars on GitHub.

The proof: vllm-project/vllm on GitHub

What other technologies is Ray used with?
With FastAPI (7), AIOHTTP (6), uvicorn (4), Hugging Face (3), and torch (3), out of the 10 repos that use it.
What languages are the repos that use Ray written in?
Python (10).
How many repos that use Ray have commits signed by AI?
10 of the 10; the most, skypilot-org/skypilot, with 16.4% of its commits.

The proof: the commits each tool signed in skypilot-org/skypilot

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