Products/Developer Tools/Let's EncryptQuietVC Report ↗

Let's Encrypt

Let's Encrypt

A new Certificate Authority - free, automated, and open

Developer Tools·Launched Mar 2015·0 upvotes·letsencrypt.org

▲Upvote0 Visit Website↗

ALIVEverified Jul 16, 2026 · HTTP 200

CohortClass of 2015

What it is

A new Certificate Authority - free, automated, and open. [Linux, Windows, Mac]

HTTP liveness

20 probes since Jun 16

Jun 16Jul 16

AliveHard-dead (404/5xx/parked)RedirectedUnverified (timeout/DNS/block)

Observed events

probes · press · GitHub

Jul 11, 2026
Back online
Alive · 200 OK
Jul 10, 2026
Probe inconclusive
Unknown
Jun 16, 2026
First probe — live
Alive · 200 OK

Discussion 0 comments

No comments yet. Be the first!

VitalsQuiet

Upvotes

—

Press

—

Tags

open source funded webhook support free smb developers open source enterprise api first

Pulse Indexobserved activity

472/4 signal families

Liveness40%

0.94

Press30%

no data

GitHub20%

no data

Tranco10%

0.99

Weighted observed activity · updated Jul 15

Founders

Electronic Frontier Foundation

Mozilla Foundation

University of Michigan

Cohort survival · Class of 2015weekly

12,940 products launched in 2015 · 100% still active

12,899 active41 sunset

Still active

100%

Median lifespan

4.9y