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Open Source Personal Knowledge Management (PKM) Tools using SCSS

A curated collection of the best open source tools for organizing personal information and building knowledge graphs. using SCSS.

Joplin

Encrypted note-taking that syncs across all your devices

  • Stars

    56,835

  • Last commit

    2 hours ago

  • License

    Unknown
Cross-platform note-taking app with end-to-end encryption, Markdown support, web clipping, and sync via Dropbox, OneDrive, or Joplin Cloud.

Open Source Alternative to:

Obsidian

SiYuan

Privacy-first knowledge management with block-level linking

  • Stars

    46,885

  • Last commit

    4 hours ago

  • License

    AGPL-3.0
Personal knowledge management system with WYSIWYG block editing, bidirectional links, spaced repetition flashcards, a relational database, and end-to-end encrypted sync.

Open Source Alternative to:

Notion

AnyType

Private workspace for notes, tasks, and databases

  • Stars

    8,974

  • Last commit

    1 day ago

  • License

    Unknown
A local-first, encrypted workspace for notes, tasks, databases, and chats. Your data stays on your device, syncs peer-to-peer, and never passes through a central server.

Open Source Alternative to:

Notion

Silverbullet

Programmable notes with queries, Lua scripting, and wiki links

  • Stars

    Stars growing over the last 30 days6,366

  • Last commit

    8 hours ago

  • License

    MIT
A self-hosted, browser-based note-taking system that turns plain Markdown pages into a queryable, scriptable knowledge base you control.

Open Source Alternative to:

Notion

Deta Surf

Browser and notebook combined with local-first AI

  • Stars

    3,606

  • Last commit

    2 months ago

  • License

    Apache-2.0
A browser that doubles as a personal notebook, letting you research, summarize, and take notes on web pages, PDFs, and videos without switching apps.

Open Source Alternative to:

NotebookLM

Beaver Notes

Local-first notes app with no cloud, no AI, no tracking

  • Stars

    1,353

  • Last commit

    6 days ago

  • License

    MIT
A privacy-focused, offline-first note-taking app that stores everything on your device, with Markdown, note linking, file attachments, LaTeX math, and bring-your-own sync.

Open Source Alternative to:

Notion
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