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OpenTabs vs SlideSieve

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

OpenTabs compared with SlideSieve
DetailOpenTabs logo OpenTabsSlideSieve logo SlideSieve
What it doesYour open tabs, grouped, on every new tab Auto-capture slides from course videos into clean PDFs with synced transcripts
StageNot given Not given
FoundedNot given Not given
Based inNot given Not given
Pricing modelOpen source Freemium
PricingFree, under the AGPL-3.0-or-later licence. No paid plans, trials or cards. Free Plan: $0 forever with up to 50 slides and 3 transcript trials. 3-Month Access (Students): $6.99 one time, expires 90 days after purchase. Pro Lifetime (Best Value): $16.99 one time (originally $24.99, 32% launch discount), pay once and use forever with unlimited slides, transcripts, and PDF exp
Key features
  • 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
  • Automatic slide detection that identifies real slide frames and skips instructor webcams, code editors, and transitions
  • Transcript extraction with automatic pulling from supported platforms in Timed View or Readable View
  • Manual snap capture with keyboard shortcuts (Ctrl+Shift+9) for code, notebooks, and demos
  • Customizable Slide Detection Zone to manually define capture area or set exclusion zones
  • PiP Magic Eraser that removes webcam overlays and fills background areas smoothly
  • Deduplication that skips duplicate slides while preserving bullet builds and progressive reveals
  • Multi-View Slide Browser with grid, list, and full-screen presentation views
What makes it different
  • 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
  • Works across multiple platforms (DeepLearning.AI, Coursera, Udemy, YouTube) with same toolbar and workflow
  • Free plan with 50 slide captures and 3 transcript trials, no credit card or signup required
  • Lifetime Pro ownership model ($16.99 one time) with all future features included and no recurring subscriptions
  • Supports Chromium-based browsers (Chrome, Edge, Brave, Opera, Arc) officially and on other variants
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)Not checked yet no change since last checkNot checked yet no change since last check
Trust Flow (Majestic)00
Citation Flow (Majestic)1316
Referring domains (Majestic)33

5 details filled in for both companies.

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