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Let's Seal
Let's Seal provides a free, open-source way to verify Adobe document signatures without relying on proprietary services
verified Aug 24, 2026 · HTTP 200
CohortClass of 2026What it is
Let's Seal provides a free, open-source way to verify Adobe document signatures without relying on proprietary services. It mirrors the Let's Encrypt model for TLS, offering transparent verification for contracts and code authenticity. Developers can integrate it into CI pipelines or run it locally to ensure signatures are valid.
HTTP liveness
6 probes since Jul 30Jul 30Aug 24
AliveHard-dead (404/5xx/parked)RedirectedUnverified (timeout/DNS/block)
Observed events
probes · press · GitHub- Aug 9, 2026+13 stars335 total
- Aug 1, 2026+20 stars285 total
- Jul 31, 2026+20 stars265 total
- Jul 30, 2026First probe — liveAlive · 200 OK
- Jul 30, 2026+22 stars245 total
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Pulse Indexobserved activity
572/4 signal families
Liveness40%1.00
Press30%no data
GitHub20%0.83
Tranco10%no data
Weighted observed activity · updated Aug 26
GitHub activitydaily 04:15 UTC
Last commit
28d ago
Last release
1mo ago
Open PRs
11
Open issues
2
Contributors 30d
2
Closed 30d
1
Cohort survival · Class of 2026weekly
3,100 products launched in 2026 · 100% still active
3,100 active0 sunset
Still active
100%
Median lifespan
4.9y