
Let's Encrypt
Caddy
acme.sh
Certify The Web
Nginx Proxy Manager
nginx
ZeroSSL
Automatically enable HTTPS on your website with EFF's Certbot, deploying Let's Encrypt certificates.

LapseZero
CTlogs.io
Entri
Approximated
acme.sh
CheapSSLsecurity
Let's Encrypt
Security

Which is more popular?
Based on our record, Certbot seems to be a lot more popular than SSLMate. While we know about 119 links to Certbot, we've tracked only 2 mentions of SSLMate.
Website, pricing, platforms and company facts side by side.
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| Website | certbot.eff.org | sslmate.com |
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What each product offers, as listed by its team.


Possible disadvantages
Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
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How often each product is chosen within a category, 0–100% relative to the other.


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Recommendations tracked on public social media and blogs since March 2021.


The solution is clear. Cryptoperiods must be shortened, and private keys should never outlive certificates; ideally, they should be single-use. This isn't new: Let's Encrypt and Certbot already rotate keys with every renewal. - Source: dev.to / 5 months ago
Unfortunately, it's more than that: the installation instructions on the certbot website[0] give options for pip or snap. Distro packages are not mentioned. [0] https://certbot.eff.org/. - Source: Hacker News / 8 months ago
⚠️ Use HTTPS to your origin in production We're using HTTP for the origin protocol here since CloudFront handles HTTPS for your users. However, the X-Origin-Verify shared secret is transmitted in plaintext over this connection. Even... - Source: dev.to / 9 months ago
The FastCGI specification is 30 years old today. It was published on April 29, 1996. It is, on a couple of structural axes that have come to matter a great deal in 2026, the protocol that the rest of the industry should be using for... - Source: dev.to / 5 months ago
I use sslmate for our one-year certs. They have proven solid over the last few years and, big pro for me: they offer scripted purchase/renewal/whatever from commandline. Source: over 5 years ago
When comparing Certbot and SSLMate, you can also consider the following products.

Let’s Encrypt is a free, automated, and open certificate authority brought to you by the Internet Security Research Group (ISRG).
Compare Let's Encrypt to Certbot or SSLMate:

SSL certificates that renew and deploy themselves. LapseZero pushes Let's Encrypt certificates to your Nginx servers, AWS CloudFront and load balancers, with no deploy scripts to maintain and no DNS API keys to hand over. Free plan, no card needed.
Compare LapseZero to Certbot or SSLMate:


Certificate Transparency search built for security teams: an alternative to crt.sh with subdomain enumeration, hostname and SHA-256 fingerprint lookup, keyword search over recent issuance, CSV export, an API and an MCP connector. Free to start.
Compare CTlogs.io to Certbot or SSLMate:

A pure Unix shell script implementing ACME client protocol and deploying SSL certificates.
Compare acme.sh to Certbot or SSLMate:

Entri is the API for custom domains. We make it easy for your application to connect, secure, sell, and power custom domains.
Compare Entri to Certbot or SSLMate: