What is the best free alternative to Obsidian?
AFFiNE is the closest free alternative to Obsidian: same AI Note-Taking & Docs sub-category, and it is free. Open-source workspace that merges docs, whiteboards and databases
Best free Obsidian alternatives
Looking for a free alternative to Obsidian? Here are 9 ai note-taking & docs worth trying — 9 with a free tier. Obsidian itself is free tier + paid.
| Tool | Obsidian (you searched) | AFFiNE | Blinko | Karakeep |
|---|---|---|---|---|
| Pricing | freemium | free | free | free |
| Best for | Local-first markdown knowledge base | Open-source workspace that merges docs, whiteboards and databases | Self-hosted personal note tool with AI retrieval over your notes (RAG) | Self-hosted bookmark and notes app that auto-tags saved links with AI |
| Visit | Open ↗ | Open ↗ | Open ↗ | Open ↗ |
Obsidian alternatives — straight answers
Are there free Obsidian alternatives?
Yes — 9 of the 9 alternatives listed here are free or freemium: AFFiNE, Blinko, Karakeep, Notion AI, Mem. None of them are paid-only.
Is Obsidian free?
Obsidian is free tier + paid. There is a free tier you can work in, with paid plans above it.
How were these Obsidian alternatives chosen?
They are the other tools in AI Note-Taking & Docs, then the rest of Productivity & Workflow, ordered free tiers first and capped at 9. There is no sponsorship and no paid placement in that ordering — only the pricing tier decides.
All Obsidian alternatives
Browse AI Note-Taking & Docs →✦ WhyA Obsidian alternative — Open-source workspace that merges docs, whiteboards and databases.
- Open-source workspace that merges docs, whiteboards and databases
- AI assistant for writing, mind maps and slides in the workspace
- Free to self-host
- Local-first with offline editing
✦ WhyA Obsidian alternative — Self-hosted personal note tool with AI retrieval over your notes (RAG).
- Self-hosted personal note tool with AI retrieval over your notes (RAG)
- Lightweight card-style notes similar to flomo
- Free and open source
- Runs with your own model keys
✦ WhyA Obsidian alternative — Self-hosted bookmark and notes app that auto-tags saved links with AI.
- Self-hosted bookmark and notes app that auto-tags saved links with AI
- Full-text search plus archived pages and screenshots
- Works with OpenAI or local Ollama models
- Free and open source
Notion AI
AI Note-Taking & Docs
✦ WhyA Obsidian alternative — AI across docs, wikis, databases and projects.
- AI across docs, wikis, databases and projects
- Cross-document Q&A and writing
- Connectors to Slack, Drive and more
- Free personal plan
Mem
AI Note-Taking & Docs
✦ WhyA Obsidian alternative — Self-organizing, AI-first notes.
- Self-organizing, AI-first notes
- Auto-tagging and smart search
- Chat with your knowledge base
- Free tier
Coda AI
AI Note-Taking & Docs
✦ WhyA Obsidian alternative — Docs that combine text, tables and apps.
- Docs that combine text, tables and apps
- AI to summarize, draft and automate
- Coda Brain across your workspace
- Free plan available
Craft
AI Note-Taking & Docs
✦ WhyA Obsidian alternative — Beautiful native-feel docs with whiteboards, tasks, calendar in one app.
- Beautiful native-feel docs with whiteboards, tasks, calendar in one app
- AI assistant with Core/Fast/Max model tiers
- Deep integrations with Claude, ChatGPT, Cursor
Capacities
AI Note-Taking & Docs
✦ WhyA Obsidian alternative — Object-based (not page-based) note model with typed content.
- Object-based (not page-based) note model with typed content
- Core product free forever per vendor policy
- AI assistant, smart queries, calendar integration on Pro
Tana
AI Note-Taking & Docs
✦ WhyA Obsidian alternative — Supertags turn notes into structured, queryable objects.
- Supertags turn notes into structured, queryable objects
- Multi-LLM support (Claude, Gemini, OpenAI) inside one graph
- Free tier includes AI meeting transcripts and 50 AI queries/mo