Ultrathink

by Fifty Five and Five · tryultrathink.com · Workflow & Planning

Manifest V3 Free

View in Chrome Web Store Data as of 16 Oct 2026

Save URLs, snippets, ideas, knowledge and tasks direct to your Ultrathink account

Users

−2 in 30 days

Rating

0.0 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#239K

#200K among extensions

Version

3.72.1

updated 9 Oct 2026

Users

monthly, 9 months

Latest, 16 Oct 2026: 6 usersMove the mouse over the chart for any month

Ratings count

monthly, 9 months

Latest, 16 Oct 2026: 0 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About Ultrathink

Ultrathink is your personal knowledge base. Save anything from the web with a single click or keyboard shortcut - URLs, text snippets, screenshots, AI conversations from ChatGPT and Claude, emails, and more. Every entry is automatically classified, tagged with topics and people, and enhanced with AI-generated summaries. Access your knowledge base from anywhere through the Ultrathink web app, where you can search, filter, organize into projects and tasks, and visualize connections between your saved content. Perfect for researchers, developers, and anyone who needs to capture and organize information from across the web. Supports bulk saving of all open tabs, automatic content detection, and seamless sync across devices.