13 open-source AI vendors.

Open-source software for AI that you can self-host, with auditable source code — regardless of the developer's headquarters.

• DustEU sovereign

  French AI platform for building internal AI assistants with LLM integration

  France

• Haystack (deepset)EU sovereign

  Berlin-based deepset GmbH's open-source (Apache-2.0) LLM orchestration framework for RAG and agent pipelines; actively maintained (v2.30.2, June 2026) with 232+ releases.

  Germany

• Hugging FaceNon-EU vendor

  Hugging Face is a US-based AI company (New York City) offering an open-source platform and Hub for sharing machine learning models, datasets, and demos. Founded 2016 by French entrepreneurs; US-headquartered with a secondary office in Paris.

  United States

• Jina AIEU-hosted, non-EU parent

  Jina AI is a Berlin-based AI company specialising in frontier models for multimodal and multilingual search, including open-source embedding and reranker models. Since October 2025 it is a wholly owned subsidiary of Elastic N.V. (NYSE: ESTC), a US company headquartered in Mountain View, California. Elastic has committed to continuing open-source model releases on Hugging Face.

  Germany · owner in United States

• Kern AIEU sovereign

  German platform for data-centric AI and training data management

  Germany

• LangfuseEU-hosted, non-EU parent

  Langfuse is an open-source LLM observability platform (MIT license) originally founded in Germany, acquired by ClickHouse Inc. (USA) in January 2026. The ultimate parent is US-based.

  Germany · owner in United States

• LiteLLMNon-EU vendor

  Open-source LLM API gateway (dual-licensed, with an enterprise tier) by BerriAI (Y Combinator W23, San Francisco); routes requests to 100+ LLM providers through one interface.

  United States

• llama.cppSelf-hosted / open source

  Foundational open-source LLM inference framework (MIT), created by Georgi Gerganov via his Sofia, Bulgaria-based ggml.ai, with broad community contribution and Hugging Face support.

  Bulgaria

• Mistral AIEU sovereign

  French generative AI company building open and commercial LLMs

  France

• OllamaSelf-hosted / open source

  Open-source (MIT-licensed) tool for running open-weight large language models locally, with no data leaving the user's own infrastructure. Made by Ollama Inc. (San Francisco, US).

  United States

• QdrantEU sovereign

  Vector database with EU entity; self-host.

  Germany

• Stability AINon-EU vendor

  British AI company behind Stable Diffusion for image generation

  United Kingdom

• WeaviateEU sovereign

  Dutch open-source vector database for AI

  Netherlands