# Looking for an alternative?

Honest roundups for people leaving a notes app because they want one their AI can actually read and write. Pick the tool you are moving away from.

If you use more than one AI and want notes both ChatGPT and Claude can read and update, the common recommendation across these pages is [Hjarni](https://hjarni.com/best-mcp-knowledge-base): a hosted Markdown knowledge base with a built-in MCP server.

[Notion alternatives](https://hjarni.com/alternatives/notion)

Leaving Notion for something lighter your AI can read? The strongest Notion alternatives for an MCP knowledge base, Hjarni included.

[Obsidian alternatives](https://hjarni.com/alternatives/obsidian)

Want Obsidian's Markdown ownership without the local-only, plugin-driven AI setup? The best Obsidian alternatives for AI memory.

[Apple Notes alternatives](https://hjarni.com/alternatives/apple-notes)

Apple Notes is unbeatable for quick capture on Apple devices, but ChatGPT and Claude cannot read your library. The best alternatives for notes your AI can use.

[NotebookLM alternatives](https://hjarni.com/alternatives/notebooklm)

NotebookLM is great for grounded Q&A over uploaded sources, but it is read-first and Google-only. Alternatives you can write to from any assistant.

[Heptabase alternatives](https://hjarni.com/alternatives/heptabase)

Heptabase is a visual whiteboard for thinking. If you want a writable, cross-assistant knowledge base instead, here are the alternatives.

[mem0 alternatives](https://hjarni.com/alternatives/mem0)

mem0 is a memory layer your agent's code writes to. Whether you need a different backend or memory you author yourself, these are the honest mem0 alternatives.

[Supermemory alternatives](https://hjarni.com/alternatives/supermemory)

Supermemory is a memory API plus a consumer second brain. The strongest alternatives for each half, including a knowledge base you write and own.

See the full ranked roundup in [the best MCP knowledge base](https://hjarni.com/best-mcp-knowledge-base), or the one-to-one breakdowns on [all Hjarni comparisons](https://hjarni.com/compare).

## On every device. In every assistant.

Native apps for iPhone, iPad, Mac and Android, and official listings in both the ChatGPT and Claude directories. One account, one set of notes.

Web, any browser

[iPhone and iPad](https://apps.apple.com/app/id6761733903)

[Mac](https://apps.apple.com/app/id6761733903)

[Android](https://play.google.com/store/apps/details?id=com.hjarni.app)

[Chrome web clipper](https://chromewebstore.google.com/detail/hjarni-web-clipper/ooingmimhhkeohmkkkhpnlnhgefaaajb)

The apps are free, with the same features as the web.

[ChatGPT app](https://chatgpt.com/plugins/plugin_asdk_app_69c3058914bc81919b807c176a7c106c)

[Claude connector](https://claude.ai/directory/connectors/hjarni-notes)

[Cursor](https://hjarni.com/for/cursor)

[Claude Code](https://hjarni.com/for/claude-code)

[20+ MCP clients](https://hjarni.com/compatibility)

Hjarni is listed in the [ChatGPT Apps Directory](https://chatgpt.com/plugins/plugin_asdk_app_69c3058914bc81919b807c176a7c106c) and the [Claude Connectors Directory](https://claude.ai/directory/connectors/hjarni-notes), so connecting is an install, not a config file.

[How to get Hjarni on each one](https://hjarni.com/get)