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Blens vs OpenTabs

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Blens compared with OpenTabs
DetailBlens logo BlensOpenTabs logo OpenTabs
What it doesBrowser extension that tracks browsing habits and provides productivity insights with privacy-first approach Your open tabs, grouped, on every new tab
StageNot given Not given
FoundedNot given Not given
Based inNot given Not given
Pricing modelFree Open source
PricingNot given Free, under the AGPL-3.0-or-later licence. No paid plans, trials or cards.
Key features
  • Browsing Analytics - Track time spent on different websites with detailed breakdowns and visualizations
  • Creativity Assessment - Evaluate browsing diversity and depth with proprietary algorithm
  • Productivity Insights - Identify peak productive times and distractions
  • Time Tracking - Monitor daily, weekly, and monthly browsing patterns with charts
  • Local Storage Only - All data stored on device, never sent to servers
  • Data Encryption - Local data encrypted for maximum security
  • Customizable UI - Dark and light modes with personalized dashboard layout
  • Full Control - Delete data at any time or choose which websites to track
  • Multi-browser Support - Compatible with Chrome, Edge, and Firefox
  • Shows open tabs from every window grouped by site
  • Close all tabs from a site in one click
  • Close duplicate tabs in one press
  • Merge windows into one
  • Customizable briefing with news topics, markets, weather, calendar and to-do list
  • Optional end-to-end encrypted sync between browsers
  • No account required
  • Instantly loads with no network requests on tab open
  • Automatic stale new tab page closing
  • Works completely offline after initial configuration
What makes it different
  • Completely privacy-focused - no data ever sent to servers or shared with third parties
  • Unique Creativity Score - proprietary algorithm evaluates browsing patterns for exploration diversity, engagement depth, browsing balance, connection making, and browsing rhythm
  • Local-only processing - all data stays on your device with no external tracking
  • Self-awareness through objective data - understand personal browsing habits with clear visualizations
  • Only tab manager that shows actual open tabs on the new tab page itself
  • Completely private by design with no account, no tracking and no server storage
  • Zero network delay when opening new tabs
  • Optional sync is end-to-end encrypted so the server never sees your data
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)4 no change since last checkNot checked yet no change since last check
Trust Flow (Majestic)30
Citation Flow (Majestic)1813
Referring domains (Majestic)323

4 details filled in for both companies.

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