1
ZeroSSL
zerossl.comAlso covers security and security tools · same kind of website
ZeroSSL issues online SSL certificates and supports HTTPS setup through a certificate management interface.
Alternatives
The Best Certbot Alternatives in 2026
24 alternatives2 free · 4 open source
Looking for something like Certbot? Here are 24 alternatives, ranked by how closely they match it on purpose, features and platforms. Of these, 2 are free or have a free plan and 4 are open source.
Obtain a certificate for a website with Certbot, which helps configure HTTPS.
Top picks at a glance
First suggestionZeroSSLZeroSSL issues online SSL certificates and supports HTTPS…Free or freemium optionSSL for FreeSSL for Free provides SSL and wildcard certificates for…Open source optioniOS + macOS ConfigsConfigure DNS over HTTPS on iOS and macOS using the…
Quick comparison
| # | Alternative | Pricing | Open source | Platforms |
|---|---|---|---|---|
| 1 | ZeroSSL | — | Not stated | Web |
| 2 | iOS + macOS Configs | — | Yes | iOS, macOS |
| 3 | DNS over HTTPS | — | Not stated | — |
| 4 | SSLMate CAA | — | Not stated | Web |
| 5 | Observatory | — | Not stated | Web |
| 6 | SSL for Free | Free | Not stated | Web |
| 7 | Anubis | — | Not stated | Web |
| 8 | Simplewall | — | Yes | Windows |
| 9 | acme.sh | — | Yes | — |
| 10 | Binary Ninja | — | Not stated | Linux, macOS, Web |
All Certbot alternatives
2
Also covers security and security tools · open source
Configure DNS over HTTPS on iOS and macOS using the provided configuration profiles.
3
DNS over HTTPS
github.com/curl/curl/wiki/DNS-over-HTTPSAlso covers security and security tools
Configure DNS over HTTPS in curl, the command-line transfer tool and library.
4
SSLMate CAA
sslmate.com/caaAlso covers security and security tools · same kind of website
SSLMate CAA helps generate CAA DNS records and explains which certificate authorities support the record type.
5
Observatory
developer.mozilla.org/en-US/observatoryAlso covers security and security tools · same kind of website
Test HTTP security headers such as CSP and HSTS, then review recommendations for improving a site.
6
Also covers security and security tools · same kind of website · free
SSL for Free provides SSL and wildcard certificates for enabling HTTPS on websites.
7
Anubis
anubis.techaro.lolAlso covers security and security tools · same kind of website
Protect a website from automated bot requests with Anubis, which evaluates incoming HTTP requests.
8
Also covers security and security tools · open source
Configure network activity rules through Windows Filtering Platform with Simplewall.
9
Also covers security and security tools · open source
acme.sh automates SSL and TLS certificate management using a Unix shell script ACME client.
10
Binary Ninja
binary.ninja/freeAlso covers linux, security, and security tools · same kind of website
Binary Ninja supports software reverse engineering and can be tried in a browser or installed as a desktop application.
11
Kismet
kismetwireless.netAlso covers linux, security, and security tools · same kind of website
Kismet monitors and captures Wi-Fi network traffic, with wireless intrusion detection and wardriving features.
12
Also covers security and security tools · same kind of website · free plan
Manage two-factor authentication codes with OTP Auth, an iOS app listed on the App Store.
13
Synk
security.snyk.ioAlso covers linux, security, and security tools · same kind of website
The Snyk Security Database provides vulnerability details and remediation guidance for packages and cloud configurations.
14
Nmap
nmap.orgAlso covers linux, security, and security tools · same kind of website
Discover hosts and map networks with Nmap, a network exploration and security scanning tool.
15
Hitch
varnish-software.com/community/hitchAlso covers linux, security, and security tools · same kind of website
The Hitch proxy handles TLS connections for Varnish and is described by its project as open source.
16
Also covers security and security tools · same kind of website
Generate secure SSL configurations for selected web, database, and mail software.
17
Also covers security and security tools · open source
Anubis weighs incoming HTTP requests to help block AI crawlers before they access a website.
18
challenges.re
challenges.reAlso covers security and security tools · same kind of website
Solve reverse engineering challenges published on challenges.re, a challenge-focused site.
19
GoPlus Locker V3
gopluslabs.ioAlso covers security and security tools · same kind of website
GoPlus offers Web3 security tools including audits, APIs, a user security hub, and a browser extension.
20
NVD
nvd.nist.govAlso covers security and security tools · same kind of website
Search the National Vulnerability Database, a public resource for vulnerability information.
21
tpscalls.live
tpscalls.liveAlso covers security and security tools · same kind of website
View Toronto Police calls for service on a map that updates in real time, according to the supplied page description.
22
mCaptcha
mcaptcha.orgAlso covers security and security tools · same kind of website
Add proof-of-work verification to websites with mCaptcha, a privacy-focused automated CAPTCHA system.
23
WhatsMyDNS
whatsmydns.netAlso covers security and security tools · same kind of website
WhatsMyDNS checks DNS record propagation across global resolvers for record types including A, AAAA, MX, and TXT.
24
Metasploit
metasploit.comAlso covers security and security tools · same kind of website
Use Metasploit to find security issues, verify mitigations, and manage authorized penetration testing assessments.
No alternatives match this filter.
Alternatives to similar tools
OTP Auth24 alternativesMozilla SSL24 alternativesNVD24 alternativeschallenges.re24 alternativesGoPlus Locker V324 alternativesmCaptcha24 alternatives
TopicSecurity Tools · 202 sites Best-of list8 Best Free Authenticator Apps for Codes and Recovery ListingCertbot details
What is the best alternative to Certbot?
Based on features, tags and platforms, the closest alternatives to Certbot are ZeroSSL, iOS + macOS Configs, and DNS over HTTPS.
Is there a free alternative to Certbot?
Yes. SSL for Free and OTP Auth are free or offer a free plan.
Are there open-source alternatives to Certbot?
Yes: iOS + macOS Configs, Simplewall, acme.sh, and Anubis.
Alternatives are suggested from the purpose and features described in our listings. Different pages for the same product appear once. Read each description to check whether it fits your task. How we choose alternatives · Suggest an alternative