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Chronos
Chronos is a Firefox extension that combines tab management with website blocking to help you maintain focus during work sessions
Productivity·Launched May 2026·0 upvotes
last checked never · Unverified
CohortClass of 2026What it is
Chronos is a Firefox extension that combines tab management with website blocking to help you maintain focus during work sessions. Save and restore tab groups on demand, create and switch between custom block lists dynamically, and optimize your browsing workflow for maximum productivity.
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Pulse Indexobserved activity
0 probes0 pressGitHub –Tranco –
Not enough observed signals for a Pulse Index (needs 2+ signal families).
Cohort survival · Class of 2026weekly
567 products launched in 2026 · 100% still active
567 active0 sunset
Still active
100%
Median lifespan
4.9y