8 Best Khoj Alternatives in 2026 (Open Source)
Khoj — Your AI second brain. Self-hostable. Get answers from the web or your docs. Build custom agents, schedule automations, do deep research. Turn any online or loca. Open-source, self-hostable platform that scales from personal on-device AI to enterprise agents with custom knowledge and tools.
These 8 open-source tools do the same job. They are ordered by how closely they match Khoj, with live GitHub data so you can see which projects are actively maintained.
| Tool | GitHub stars | Stars / 30d | Last commit |
|---|---|---|---|
| Khoj(original) | 37.5k | +3,129 | 2026-08-02 |
| Second Brain AI agent | 312 | +5 | 2026-04-05 |
| WeKnora | 31.5k | +2,623 | 2026-09-30 |
| kotaemon | 25.8k | +2,149 | 2026-05-30 |
| knowledge-gpt | 1.6k | +-4 | 2023-09-18 |
| Knowledge | 1.5k | +-0 | 2025-11-27 |
| Open Notebook | 39.7k | +2,916 | 2026-09-12 |
| SiYuan | 46.6k | +3,882 | 2026-09-29 |
| GPT Researcher | 29.8k | +607 | 2026-09-26 |
1. Second Brain AI agent
🧠 Second Brain AI agent
Best for: Professionals with extensive personal note collections (Obsidian, markdown-based PKM); Researchers needing semantic search across mixed-format knowledge bases; Developers integrating personal knowledge into AI-powered workflows via MCP
2. WeKnora
Open-source LLM knowledge platform: turn raw documents into a queryable RAG, an autonomous reasoning agent, and a self-maintaining Wiki.
What sets it apart: Combines RAG retrieval, autonomous reasoning agents, and self-maintaining wikis in a single open-source platform with persistent sandbox execution and enterprise-grade permissions.
Best for: Enterprise document understanding and reasoning; Building autonomous agents with persistent sandboxes; Creating self-maintaining knowledge bases from documents
3. kotaemon
An open-source RAG-based tool for chatting with your documents.
What sets it apart: Provides both a ready-to-use RAG UI for end users and a framework for developers to build custom RAG pipelines.
Best for: Developers building custom RAG systems; Teams needing document QA interfaces; Projects requiring customizable RAG pipelines
4. knowledge-gpt
Accurate answers and instant citations for your documents.
What sets it apart: vs ChatPDF/Unstructured: simple Streamlit-based document Q&A with citation extraction — optimized for quick single-document analysis with verifiable source references
Best for: Extracting cited answers from research papers and reports; Quick document Q&A with source verification; Prototyping RAG-based document analysis tools
5. Knowledge
Knowledge is a tool for saving, searching, accessing, exploring and chatting with all of your favorite websites, documents and files.
What sets it apart: vs Notion/Obsidian: built-in Chromium browser + AI chat for conversational knowledge exploration with graph visualization — though no longer maintained
Best for: Personal knowledge management with AI-powered exploration; Researchers wanting graph-based knowledge organization
6. Open Notebook
An Open Source implementation of Notebook LM with more flexibility and features
What sets it apart: Self-hosted NotebookLM alternative with 16+ provider support and 4-speaker podcast generation — vs Google NotebookLM which is cloud-only with 2 speakers
Best for: Privacy-conscious researchers who want NotebookLM-like features; Users who want multi-provider AI with local model support
7. SiYuan
An open-source, privacy-first, self-hosted knowledge workspace where humans and AI agents work together 开源、隐私优先、自托管的知识工作空间，让人与智能体在此协作
What sets it apart: Combines privacy-first, self-hosted knowledge management with native AI agent collaboration features for structured human-AI teamwork.
Best for: Teams needing private knowledge bases with AI assistance; Developers wanting self-hosted agent-augmented workspaces; Organizations requiring block-level knowledge management with AI integration
8. GPT Researcher
An autonomous agent that conducts deep research on any data using any LLM providers
What sets it apart: Purpose-built autonomous research agent with plan-and-solve + parallel execution — vs generic LLM chat that produces shallow, uncited answers
Best for: Automated research report generation on any topic; Teams needing factual, cited, unbiased research at scale; Replacing manual research workflows
FAQ
- What are the best alternatives to Khoj?
- The closest open-source alternatives to Khoj are Second Brain AI agent, WeKnora and kotaemon, followed by knowledge-gpt, Knowledge and Open Notebook. They are ranked by how closely they match what Khoj does.
- Which Khoj alternative is the most popular?
- SiYuan has the most GitHub stars among Khoj alternatives, with 46,580 stars.
- Which Khoj alternative is the most actively maintained?
- By recent activity, SiYuan (4,873 commits in the last 90 days) is the most actively developed alternative.