OpenTabs vs StudyChime

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 StudyChime
Detail	OpenTabs	StudyChime
What it does	Your open tabs, grouped, on every new tab	Private Prolific study notifications for Chrome, Discord, Telegram and Pushover
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Open source	Freemium
Pricing	Free, under the AGPL-3.0-or-later licence. No paid plans, trials or cards.	Free: browser alerts, local milestones, 5 external-alert batches per rolling 24-hour period. Premium: £4.99 one-time payment for lifetime access, includes unlimited external alerts, filter profiles, alert schedules, Remote snooze and resume, custom sounds, and local Study Trends.
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	Browser and Discord, Telegram, Pushover notifications Reward, availability, time, and keyword filters Reusable filter profiles and alert schedules Local Study Trends with 7, 30, 90, and 12-month views Remote snooze and resume from phone alerts Local milestones and progress tracking 14-day Premium trial with no card required Monitoring health status display
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	Private alerts sent only to services you control, not to StudyChime Does not automatically accept, reserve, refresh, complete or submit studies No Prolific password or cookie permissions required Local-first data storage with privacy-minimised Study Trends One-time £4.99 lifetime Premium purchase with no subscription
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	Not checked yet no change since last check	1 no change since last check
Trust Flow (Majestic)	0	0
Citation Flow (Majestic)	13	14
Referring domains (Majestic)	3	3

5 details filled in for both companies.

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