Choose Logseq if
You write most of your notes yourself, want free and open-source software, and want sync, collaboration and a mobile app from the same project.
Compare
Knowtarium vs Logseq
Logseq is an open-source knowledge base for writing and linking your own notes. Knowtarium is an end-to-end encrypted knowledge base that your own AI agents work in over MCP, where every change is signed by whoever made it and can be undone in one click.
The short version
Which one is for you?
They solve different problems. Here's which one fits the way you work.
Choose Knowtarium if
Agents write a lot of your notes, and you want to connect them in one command, limit each to the folders it needs, and see and undo every change they make. Comparing more options? See our list of Obsidian alternatives.
Side by side
Feature by feature.
TopicKnowtariumLogseq
Made forA private knowledge base that you and your own AI agents work inKnowledge management, tasks and PDF annotation for your own notes
EncryptionEnd-to-end: notes, titles, file names and links are encrypted on your device, and we can't read them. The AI you connect sees what it readsLocal files or a local database on your computer; Logseq Sync is end-to-end encrypted with a password you set
AI agentsYour own agents over MCP: sets up Claude Code, Codex, Cursor, OpenCode and Claude Desktop, each limited to one workspace or some folders. claude.ai and ChatGPT laterThe database version has an optional MCP server, run from the desktop app or the CLI, that can create and search, and edit block text
Who changed whatEvery change is signed by whoever made it, you or a named agent, and can be undone in one clickNot built in
Reviewing agent changesOptional: turn on review for a workspace or a folder, and agents' changes there wait for you as a diffNot built in
FormatOKF, the open specification published by Google Cloud: markdown with fields for who wrote each note, where its claims came from and when it goes staleNow two apps: Logseq OG keeps Markdown or Org-mode files and gets security updates but no new features; the new Logseq (2.0, in beta since July 2026) keeps each graph in a local SQLite database
Lock-inNone: export every workspace as plain OKF markdown files in one zip, readable by any editor or agentDatabase graphs export as SQLite, or as standard Markdown without block properties
Open sourceThe web app isn't; its encryption, CLI and MCP server are (MIT)Yes, under the AGPL-3.0
WritingA markdown editor with properties on top that saves as you typeWriting and linking your own notes is the heart of the app
Sync and collaborationSync built in and end-to-end encrypted; no shared workspaces yetLogseq Sync for database graphs, with real-time collaboration; in alpha, open to paying monthly backers, and it can also be self-hosted
PlatformsA web app in your browser; no desktop or phone app yetmacOS, Windows, Linux and the web, plus mobile apps (the new version's mobile app is an iOS-only alpha so far)
PriceFree with 500 MB and one workspace; Starter $5.99 a month for 2 GB, Pro $11.99 a month for 10 GB; two months free billed yearlyFree; Sync is a paid feature
Facts about Logseq checked on September 26, 2026 against logseq.com, Logseq's GitHub repository and its published docs, and its Sync encryption on October 5, 2026. Logseq is a trademark of its owner. OKF is published by Google Cloud. Knowtarium isn't affiliated with either. Spot something out of date? Email support@knowtarium.com.