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Note Taking & Knowledge Management

Note Taking & Knowledge Management open-source alternatives curated by the directory.

Note Taking & Knowledge Management

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27 of 27 tools

Khoj

AGPL-3.0

Self-hostable AI assistant that connects to your docs and the web, lets you build agents, schedule automations, and run research with verifiable citations.

ClaudeChatGPTPerplexity
35K 2.2K Last commit 3 months ago
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Meetily

MIT

Records, transcribes, and summarizes meetings entirely on your device using local AI. No bots, no cloud uploads, GDPR and HIPAA compliant by design.

Otter.aiGranolaJamie AI
13K 1.3K Last commit 9 days ago
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SurfSense

Apache-2.0

Self-hostable NotebookLM alternative that lets teams build searchable knowledge bases from diverse sources, with support for any LLM and no data limits.

NotebookLMPerplexity
14K 1.4K Last commit 18 hours ago
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AppFlowy

AGPL-3.0

Open source collaborative workspace combining notes, databases, and AI with full data ownership, offline support, and self-hosting options.

NotionObsidianOneNote
72K 5.5K Last commit 9 days ago
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Affine

Unknown

An open-source, local-first knowledge base that merges structured docs, infinite whiteboards, databases, and AI into a single workspace for teams and creators.

NotionOneNoteConfluence
69K 4.9K Last commit 3 days ago
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Docmost

AGPL-3.0

Self-hosted wiki platform for enterprise teams with real-time collaboration, built-in AI, SSO, RBAC permissions, and compliance support for ITAR, FedRAMP, and GDPR.

NotionObsidianConfluence
21K 1.4K Last commit 15 hours ago
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Outline

Unknown

Team knowledge base with real-time collaboration, AI-powered search, Slack integration, and self-hosting support for internal docs and wikis.

NotionConfluenceCraft
39K 3.3K Last commit 19 hours ago
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Vrite

Unknown

A powerful platform for technical writing, offering real-time collaboration, version control, and seamless integrations.

MintlifyGitbook
2.0K 81 Last commit 6 days ago
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XWiki

LGPL-2.1

XWiki is a flexible, feature-rich wiki software that helps organizations structure and share knowledge efficiently.

NotionObsidianConfluence
1.3K 628 Last commit 6 hours ago
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Anarlog

MIT

Records system audio without joining your call, then turns rough notes into editable summaries. Audio, transcripts, and notes stay as local files.

Otter.aiGranolaJamie AI
8.6K 637 Last commit 11 hours ago
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AnyType

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.

NotionObsidianGoogle Keep
8.1K 524 Last commit 15 hours ago
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Beaver Notes

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.

NotionObsidianOneNote
1.3K 64 Last commit 2 days ago
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Blinko

GPL-3.0

The next generation of open-source AI-powered card notes designed to help you quickly capture and organize inspiration so that ideas never run out.

NotionObsidianLogseq
11K 747 Last commit 14 days ago
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Darkwrite

AGPL-3.0

A customizable, offline-first note editor that lets you format text, create lists, add images, and export to HTML - all while maintaining your privacy.

NotionObsidianOneNote
287 11 Last commit 16 days ago
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Deta Surf

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.

NotebookLMComet BrowserRoam Research
3.4K 253 Last commit 5 days ago
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Joplin

Unknown

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

ObsidianOneNoteGoogle Keep
55K 6.1K Last commit 17 hours ago
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Justnote

GPL-2.0

Justnote is a secure note-taking app that lets you easily create and sync notes across devices while maintaining full control of your data.

NotionObsidianOneNote
66 5 Last commit 4 months ago
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KeePassXC

Unknown

KeePassXC is an open-source password manager that securely stores and manages sensitive information across Windows, macOS, and Linux.

1PasswordProton PassKeeper
28K 1.8K Last commit 10 days ago
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Logseq

AGPL-3.0

Local-first, open-source knowledge management tool with bidirectional linking, outlines, flashcards, PDF annotations, and whiteboards for building a connected second brain.

NotionObsidianGoogle Keep
43K 2.7K Last commit 1 day ago
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Memos

MIT

Memos is a self-hosted, open-source note-taking app built around a private timeline. Write in Markdown, skip the folder setup, and keep your data on your own server.

NotionObsidianOneNote
61K 4.5K Last commit 1 day ago
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Notesnook

GPL-3.0

End-to-end encrypted note-taking app with zero-knowledge architecture, cross-device sync, web clipper, and a self-hostable sync server.

NotionObsidianOneNote
14K 957 Last commit 1 day ago
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Open-Notebook

MIT

Combines AI summarization, podcast generation, and multi-format content ingestion for researchers and students who want to keep their data private.

NotebookLMRoam Research
30K 3.4K Last commit 1 day ago
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OpenNotas

Unknown

OpenNotas is a multi-platform, end-to-end encrypted note-taking app that offers simplicity, synchronization, and offline functionality.

ObsidianOneNoteGoogle Keep
172 19 Last commit 2 months ago
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SiYuan

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.

NotionObsidianOneNote
44K 2.8K Last commit 12 hours ago
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