OpenKnowledge vs Puppyone

Comparing two open source alternatives to Notion and Obsidian. Use the comparison below to decide which one fits your needs.

OpenKnowledge

GPL-3.0

AI-native, local-first markdown editor and LLM wiki with built-in integrations for Claude, Codex, and other agents.

Visit Full details

Puppyone

Apache-2.0

Open source local-first editor for Markdown, docs, rich files, and AI agents — with built-in terminal and Git review.

Visit Full details

Side-by-side comparison

	OpenKnowledge	Puppyone
License	GPL-3.0	Apache-2.0
Self-hostable	Yes	Yes
GitHub Stars	4,726	1,348
Forks	322	124
Open Issues	54	5
Last Commit	Oct 28, 2026	Oct 29, 2026
First Released	Jun 3, 2026	Jun 29, 2026
Categories	Note Taking & Knowledge Management Tools	Note Taking & Knowledge Management Tools
Tags	#markdown #notes #ai #second-brain #agents	#note taking #notes #local-first #agents

GitHub stars over time

OpenKnowledge

Puppyone1,348

Similar open source alternatives

AppFlowy

Open source Notion alternative that brings projects, wikis, and teams together with AI while keeping you in control of your data.

Alternative to:

Notion

HelixNotes

A fast, privacy-first local markdown note-taking app built with Tauri and SvelteKit. Your notes stay as plain .md files on your device.

Alternative to:

Obsidian

Jotty

Self-hosted notes and checklists with markdown files, Kanban task projects, SSO, PGP encryption, and a REST API.

Alternative to:

Notion

Outline

The fastest growing-team knowledge base — beautiful, realtime collaborative, feature packed, and markdown compatible Notion and Confluence alternative.

Alternative to:

Notion

memos

Privacy-first, self-hosted note-taking platform with markdown support, tagging, and built-in AI — a lightweight alternative to Notion and Obsidian.

Alternative to:

Obsidian

AFFiNE

Open-source knowledge base combining note-taking, whiteboard, and project planning in one workspace.

Alternative to:

Notion