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Notion alternatives · Note-Taking

Open-source alternatives to Notion

Notion is not described as open source on its own site. 50 of the 146 other note-taking apps in this directory are open source, according to their own sites.

Notion has a free plan. Paid plans start at $10 per member / month, billed yearly. All of them are free or have a free plan.

50 tools · Listings checked up to Oct 9, 2026 · Where the facts come from

The 12 closest to Notion

  1. AFFiNE

    Open-source workspace that merges docs, whiteboards and databases

    • AFFiNE starts at $6.75 per month, billed annually. Notion starts at $10 per member / month, billed yearly.
    • Only AFFiNE lists a Linux app.
    • AFFiNE is open source and self-hostable, according to its own site.
    • AFFiNE also covers whiteboard.
    AFFiNE vs NotionAFFiNE pricing and details

  2. AppFlowy

    Open-core workspace for docs, wikis and projects you can self-host

    • AppFlowy starts at $6 / month, billed annually (self-hosted One); cloud Pro is $16 per member. Notion starts at $10 per member / month, billed yearly.
    • Only AppFlowy lists a Linux app.
    • Only Notion lists a browser extension.
    • AppFlowy is open source and self-hostable, according to its own site.
    AppFlowy vs NotionAppFlowy pricing and details

  3. Blinko

    AI-assisted card notes, self-hosted or on Blinko Cloud

    • Blinko starts at $5.99 per month, billed monthly (Blinko Cloud Pro). Notion starts at $10 per member / month, billed yearly.
    • Only Blinko lists a Linux app.
    • Only Notion lists an iOS app.
    • Only Notion lists a browser extension.
    Blinko pricing and details

  4. NoteDiscovery

    Self-hosted Markdown knowledge base that runs in the browser

    • NoteDiscovery is free. Notion starts at $10 per member / month, billed yearly.
    • Only Notion lists macOS, Windows, iOS and Android apps.
    • Only Notion lists a browser extension.
    • NoteDiscovery is open source and self-hostable, according to its own site.
    NoteDiscovery pricing and details

  5. Reflect

    Open-source daily notes app with backlinks and local Markdown

    • Reflect starts at $9.99 per month, or $99 per year, for the iPhone and iPad app. Notion starts at $10 per member / month, billed yearly.
    • Only Notion lists a web app.
    • Only Notion lists Windows and Android apps.
    • Reflect is open source, according to its own site.
    Reflect pricing and details

  6. Trilium Notes

    Free, open-source hierarchical notes for a personal knowledge base

    • Trilium Notes is free. Notion starts at $10 per member / month, billed yearly.
    • Only Trilium Notes lists a Linux app.
    • Only Notion lists iOS and Android apps.
    • Trilium Notes is open source and self-hostable, according to its own site.
    Trilium Notes pricing and details

  7. SiYuan

    Open-source, local-first notes built on linked content blocks

    • SiYuan starts at $64 one-time payment (PRO Features). Notion starts at $10 per member / month, billed yearly.
    • Only SiYuan lists a Linux app.
    • SiYuan is open source, self-hostable and end-to-end encrypted, according to its own site.
    • SiYuan also covers linked notes.
    SiYuan pricing and details

  8. TiddlyWiki

    Open-source personal wiki kept in a single HTML file

    • TiddlyWiki is free. Notion starts at $10 per member / month, billed yearly.
    • Only TiddlyWiki lists a Linux app.
    • Only Notion lists iOS and Android apps.
    • Only Notion lists a browser extension.
    TiddlyWiki pricing and details

  9. Memos

    Open-source, self-hosted timeline of short Markdown notes

    • Memos is free. Notion starts at $10 per member / month, billed yearly.
    • Only Notion lists macOS, Windows, iOS and Android apps.
    • Memos is open source and self-hostable, according to its own site.
    • Memos also covers Markdown, linked notes and web clipper.
    Memos pricing and details

  10. Tolaria

    Free, open-source desktop app for Markdown knowledge bases

    • Tolaria is free. Notion starts at $10 per member / month, billed yearly.
    • Only Tolaria lists a Linux app.
    • Only Notion lists a web app.
    • Only Notion lists iOS and Android apps.
    Tolaria pricing and details

  11. Lockbook

    Open-source encrypted notes app with Markdown and drawing

    • Lockbook starts at $2.99 per month. Notion starts at $10 per member / month, billed yearly.
    • Only Lockbook lists a Linux app.
    • Only Notion lists a web app.
    • Only Notion lists a browser extension.
    Lockbook pricing and details

  12. Linwood Butterfly

    Open-source handwriting and sketching app with an infinite canvas

    • Linwood Butterfly is free. Notion starts at $10 per member / month, billed yearly.
    • Only Linwood Butterfly lists a Linux app.
    • Only Notion lists an iOS app.
    • Only Notion lists a browser extension.
    Linwood Butterfly pricing and details

38 more that are open source

All 50 in one table

Common questions

Is there an open-source alternative to Notion?

Yes. AFFiNE, AppFlowy, Blinko, NoteDiscovery, Reflect, Trilium Notes, SiYuan, TiddlyWiki and 42 more are open source, according to their own sites.

Is Notion open source?

Notion is not described as open source on its own site. The listing was checked on Oct 4, 2026 against the pages it cites.

When was this checked?

Each listing shows its own date. On this page they run from Oct 4, 2026 to Oct 9, 2026. Vendors change prices and plans without notice, so confirm on their site before you buy.

This page is built from the listings. A tool is here because its listing says so, and the order is how close each is to Notion: the alternatives its listing names first, then the tools that share the most features with it.