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Popcart
Popcart is a free browser extension that automatically compares prices across online retailers as you shop
since Jun 16, 2026 · HTTP 520
CohortClass of 2026What it is
Popcart is a free browser extension that automatically compares prices across online retailers as you shop. Set price drop alerts and stock notifications to catch deals instantly whenever your desired items become available or decrease in cost.
HTTP liveness
9 probes since Jun 16Jun 16Jul 13
AliveHard-dead (404/5xx/parked)RedirectedUnverified (timeout/DNS/block)
Observed events
probes · press · GitHub- Jun 16, 2026First probe — downDead · 5xx
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Pulse Indexobserved activity
9 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