Open-source alternatives to Glean

Glean in the AI category. These are the open alternatives we recommend looking at.

Onyx

AI chat and search across company documents and tools, for any language model.

MITPermissiveOpen core

SaaS: YesClosed product: Yes

GitHub stars
32.3k
Deployment
Docker
Login/SSO
OIDC, SAML

WeKnora

Knowledge platform that makes documents searchable with RAG and an AI agent.

MITPermissive

SaaS: YesClosed product: Yes

GitHub stars
31.8k
Deployment
Docker

SurfSense

Research assistant that searches your own documents and sources with AI, an alternative to NotebookLM.

Apache-2.0PermissiveOpen core

SaaS: YesClosed product: Yes

GitHub stars
16.3k
Deployment
Docker

RAGFlow

RAG engine that ingests documents, searches them and lets language models answer with citations.

Apache-2.0Permissive

SaaS: YesClosed product: Yes

GitHub stars
91.6k
Deployment
Docker

LlamaIndex

Framework for connecting your own documents and data to language models, for RAG and agents among other things.

MITPermissive

SaaS: YesClosed product: Yes

GitHub stars
52.4k
Deployment
Library

GraphRAG

Method and library from Microsoft for RAG that builds a knowledge graph from the texts before searching.

MITPermissive

SaaS: YesClosed product: Yes

GitHub stars
36.2k
Deployment
Library

Haystack

Python framework for building LLM apps as pipelines, with search, RAG and agents.

Apache-2.0Permissive

SaaS: YesClosed product: Yes

GitHub stars
26.6k
Deployment
Library

This is guidance, not legal advice (inte juridisk rådgivning). Check with a lawyer before deciding.

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