Best Knowledge Base Open Source Tools in 2026

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Open Source Alternatives

Macro

stars 4.1Kforks 396

The open source workspace, one app for all your work.

Email Knowledge Base Knowledge Management+1

Outline

stars 40.4Kforks 3.5K

Team wiki and knowledge base with realtime collaboration

Knowledge Base Knowledge Management Documentation+4

AFFiNE

stars 72Kforks 5.2K

Local-first workspace combining docs, whiteboards, and notes

Knowledge Base Note-taking Apps Documentation+4

Khoj

stars 36.8Kforks 2.4K

Self-hosted AI assistant that searches your notes and web

AI Agents AI Search Tools Knowledge Base+4

Supermemory

stars 29.1Kforks 2.5K

Add persistent user memory to any LLM app via API, Apache 2.0

AI Agents LLM RAG+4

Typemill

stars 2forks 0

Flat-file CMS: write Markdown, publish docs and user manuals

CMS Documentation Knowledge Base+3

Docmost

stars 21.5Kforks 1.5K

Self-hosted collaborative wiki and documentation tool

Documentation Knowledge Base Knowledge Management+3

Logseq

stars 44.7Kforks 2.8K

Privacy-first knowledge base with outliner and graph view

Knowledge Management Note-taking Apps Knowledge Base+5

Trieve

stars 2.7Kforks 251

Hybrid search and RAG infrastructure for AI knowledge bases

AI Search Tools RAG LLM+4

UVdesk

stars 19.5Kforks 565

Helpdesk and ticketing on PHP/Symfony with workflow automation

Customer Support Knowledge Base Workflow Automation+4

Scoold

stars 922forks 229

Self-hosted Q&A platform for internal team knowledge

Knowledge Management Knowledge Base Self Hosted+5

Chatwoot

stars 36.3Kforks 8.8K

Self-hosted customer support platform with live chat and AI

Customer Support Chat Knowledge Base+4