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Index › Products › Let's Encrypt · October 2026 Edition
1 category · Ranked

Let's Encrypt

19Judge labels
9First choices
5Negative labels
11 / 14Models named it
1Category
October 2026 Edition. Every number here is derived from the raw labels under vendor table v2026-10.8, every buyer segment counted.
Best standing
11% in Certificate management for small business buyers
Rank 7 of 104 in the mid-market standing
0 of 14 models made it the first choice on the direct prompt; 43% of its 7 labels there were negative.
By buyer segmentRead the same way at every buyer size.
In certificate management · each standing computed within its segment · bars are 0 to 100 · the accent bar is the product's own best reading

Standing by category

Every category where a model named Let's Encrypt for a mid-market B2B company. Share is first choices across the direct, paraphrase, budget and scale prompts; rank is within every product named in that category.
CategoryFunctionShareRankNegative rateLabelsQuadrantSince September 2026
Certificate lifecycle managementIdentity and access6%7 of 10443%7under 10 labels · led by Sectigo Certificate Manager at 27%

Movement

This is the first edition on this tier, so no move can be computed for Let's Encrypt yet. From the next edition this section shows, per buyer segment and per category, whether its share moved by more than the measured noise floor.

By model

How each model treated Let's Encrypt across every prompt where it was named for a mid-market B2B company. Fourteen models, six prompts per category.
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ModelFirst choiceAlternativeMentionNegativeLabels
Claude Haiku 4.500101
GPT-5.4 mini00000
Gemini 3.5 Flash00000
Perplexity Sonar00000
Grok 4.1 Fast00000
Mistral Small00000
DeepSeek V4 Flash10001
Llama 4 Maverick00000
Qwen 3.7 Flash00011
Kimi K210012
GLM 4.7 FlashX00011
MiniMax M2.500000
GPT-6 Luna10001
Muse Glimmer 30B00000

By framing

Which of the six questions produced the naming. By model says how often; this says asked what. The first-choice count on the right carries the marks of the models that produced it.
FramingLabels by classFirst choices
Direct1 label1
Paraphrase6 labels2
Comparative1 labelNone
Budget-constrained7 labels6
Scale-constrained0 labelsNone
Negative4 labelsNone
First choiceAlternativeMentionNegative19 labels in all, every segment counted; 9 of the 9 first choices count toward share, since the comparative and negative framings do not. The bar is one segment per label class, to scale within the framing.

What the models said for it

Verbatim evidence the judge attached to positive labels.

“Start with Let's Encrypt for basic public SSL needs, or AWS Certificate Manager if you're AWS-native.” Kimi K2 · Certificate management · budget prompt · first choice
“Kubernetes workloads or public-facing TLS: Start with cert-manager + Let's Encrypt. Both are free” GPT-6 Luna · Certificate management · budget prompt · first choice
“Spend zero dollars on Certbot/Let's Encrypt first.” DeepSeek V4 Flash · Certificate management · budget prompt · first choice

And against it

Verbatim evidence attached to negative labels. A warning on a product with few labels is a warning; on a product with many, it is one voice among them.

“Self-managed solutions - Let's Encrypt + scripts - becomes unmanageable at scale” GLM 4.7 FlashX · Certificate management · paraphrase prompt · hard negative
“Free certificates, but requires a dedicated DevOps engineer to write and maintain the automation scripts. High operational risk.” Qwen 3.7 Flash · Certificate management · paraphrase prompt · soft negative
“Not necessarily "avoid," but be aware of significant limitations: No technical support” Kimi K2 · Certificate management · negative prompt · soft negative

Named alongside

The products named in the same answers as Let's Encrypt, over the 19 answers that named it. Took the first choice instead counts the answers where the other product was the first choice and Let's Encrypt was named but was not.
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ProductSame answerTook the first choice insteadHead to head
Sectigo Certificate Manager9 of 194Not among the top eight
ZeroSSL9 of 190Not among the top eight
AWS Certificate Manager8 of 190Not among the top eight
Venafi7 of 192Not among the top eight
Keyfactor6 of 191Not among the top eight
Certbot6 of 190Not among the top eight
DigiCert5 of 190Not among the top eight
AppViewX CERT+4 of 190Not among the top eight
Certify The Web4 of 190Not among the top eight
Sectigo SCM Pro3 of 191Not among the top eight
A head-to-head page exists where both products are among a category's top eight. The other rows are the same fact without a page behind them, so they link to the product instead.

What carried it into the answer

The sites and pages cited by the answers that named Let's Encrypt. A fact about retrieval, not a lever on the model.

Citations exist only for the models that return a source list, five of the fourteen in this edition, so these counts come from 18 of the 19 answers that named Let's Encrypt and are not a share of its labels.

Domains cited

g2.com12
worldmetrics.org9
gitnux.org8
sectigo.com8
devopsschool.com7
qcecuring.com6
digicert.com5
infisical.com5
itechguides.com5
verifyed.io5

Seventy of the seventy domain citations in answers naming Let's Encrypt came from somebody else's page.

Pages cited

Pages are listed as the models cited them.

Search and answers

letsencrypt.org is not in Google's top ten for any of the category's searches. In the answers, Let's Encrypt takes 6% of first choices and Sectigo Certificate Manager takes 27%.
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In search

Google, US estimates
Position for “certificate lifecycle management platform”
–
not in the top ten
Position for “certificate lifecycle management platforms”
–
not in the top ten
Searches for its name, Google
8,100 a month (“let's encrypt”)
AI search demand for its name, est.
719 a month
Organic visits to its site
about 135,310 a month
Searches its site ranks for
7,841 · 867 in the top three
Sites linking to it
48,528
Paid Google search
No ads found in the estimate; that does not mean it runs none
Ads on Google
None found in Google's ad transparency records for the US

In answers

This edition
Share of first choices
6%
rank 7 of 104 in certificate management
Segment leader
27%
Sectigo Certificate Manager
First choices
9 across its categories
Named in
19 answers
Its own site cited
in 18 of the answers that named it

Search figures are US estimates from DataForSEO, read October 5, 2026; AI search demand is its modeled, directional estimate, not a count of queries to any assistant. The answers are this edition's. Two measurements side by side: neither is read as the cause of the other.

What it publishes

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Addresses on letsencrypt.org
11,143
subdomains included
Content
264
counted in the table below
Documentation
10,054
Product · Integration
0 · 0
KindPagesLast 90 days2025-11 to 2026-10LatestCategories named
Glossary or explainer20902019-08-31
Comparison3602026-04-15
Report or ebook1302019-03-07
Conference or event302018-08-29
Webinar or virtual event202026-07-02
Template or tool102018-03-25

Most recent

  • 2026-07-02248603 webinar or virtual event
  • 2026-04-15246630 comparison
  • 2026-03-26246162 webinar or virtual event
  • 2019-08-31101013 glossary or explainer
  • 2019-08-31101015 glossary or explainer
  • 2019-08-30101003 glossary or explainer
How it is countedHide how it is counted

Every page letsencrypt.org exposes, subdomains included. Kind is read from the address and title. The last 90 days, the latest date and the twelve months count pages by when they were published, from the site's feeds, a date in the address, or the page's own publication date, read from up to a hundred of its most recently changed pages; a page that says only when it last changed is counted in its kind but not in when, so the recent counts are a floor, and a kind none of whose pages gives a publication date reads undated. An event counts as online when its address or title says so (webinar, on demand, virtual or online summit); a conference, summit, trade show, expo or roadshow that does not say so is counted as a conference or event, which on a vendor's site is mostly in person. Read October 5, 2026.

Names read as Let's Encrypt

What the judge wrote, as written, with how often. The vendor table decides that these count as Let's Encrypt; a claim can dispute any of them.
Let's Encrypt (ISRG) 1Let's Encrypt / cert-manager for Enterprise 1cert-manager + Let's Encrypt 1

Follow Let's Encrypt

An email the morning each edition publishes: where this product moved, where it held, and by how much against the noise floor. One address, confirmed by a click; a stop link in every email.

Already following? Everything you follow, with a stop for each.

The company

Let's Encrypt is its own company.
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In its own words

Stated by the vendor, not checked
Positioning
a free, automated, and open Certificate Authority
For
websites
Price stated
free letsencrypt.org
Free plan or trial
free TLS certificates letsencrypt.org
Not stated on the pages read
Starting price, integrations, certifications, hosting, customers

What Let's Encrypt's own pages state, read October 5, 2026: letsencrypt.org. A claimed page can correct any of them.

Is this your product?

Claim this page

Claiming is free and changes nothing in the data. A claimed page shows a verified contact who is told when each edition publishes and when Let's Encrypt's standing changes by more than the noise floor; the right to propose corrections to the vendor table, meaning names the judge wrote that should or should not read as Let's Encrypt, applied by version and listed in the change log; and a one-line description supplied by the vendor and marked as such.

What a new claim receivesHide what a new claim receives

A new claim receives the current edition's vendor brief for Let's Encrypt by email, built from the raw record of the edition. It shows:

  • where Let's Encrypt is named, by buyer and by framing, and which cells hold its first choices;
  • the claims the models make when they name it, ranked, with the strongest and the weakest quoted;
  • its vocabulary against the segment leader's, and the pages the models cited;
  • who was chosen in the answers that did not name Let's Encrypt, and every reason the record gives;
  • a battlecard for each top rival: the head-to-head split, why they win, and the reservation quoted against them;
  • one page of published figures cleared to show a buyer.
The subscriber app

A verification link goes to your work email; an address at letsencrypt.org is approved on the spot, any other is reviewed by hand. Your email is never published. Claiming gives no say over labels, shares, verdicts or which quotes appear.