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Black Friday 2021
A curated collection of Black Friday and Cyber Monday discounts across digital tools and software products
verified Jul 13, 2026 · HTTP 200
CohortClass of 2021What it is
A curated collection of Black Friday and Cyber Monday discounts across digital tools and software products. Focuses on growth hacking, tech infrastructure, and side project resources to help businesses optimize their tooling investments.
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 — liveAlive · 200 OK
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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 2021weekly
96 products launched in 2021 · 99% still active
95 active1 sunset
Still active
99%
Median lifespan
4.9y