Uni3K

Uni3K · Card notes

Jot it down. Find it with ease.

Card notes for you and your AI. Keep a passage from the web with its source, or jot a thought in a few lines. Look back through them over time, and let your own AI search them too.

Add to ChromeAdd to EdgeOpen web app
The Uni3K card library: categories, folders and an agent space on the left, clips, quick notes and Markdown cards on the right. Demo data.

What you can do

Clip in one click

Select text on any page, then tap +, press Alt+C or right-click. The page title and link come with it, and the passage is highlighted on the page.

Quick notes

Jot a thought in the side panel and press Ctrl/⌘+Enter. Markdown headings, checklists, quotes and code all work.

Look back over time

Browse what you saved and thought by day, week or month, or find it again with full-text search and folders.

Notes your AI can search and add to

With local MCP, assistants such as Claude can search the cards you allow and keep notes in a space of their own.

Yours, and quiet. Cards stay on your device by default. Lock the private ones with your own password, so no one, not even an AI, can read them. Sign in at app.uni3k.com when you want cloud cards on every device. No ads, no tracking.

Free to start

Every local feature is free, and so are your first 200 cloud cards. Pro adds more for heavy use.

See pricing

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