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Best Certbot Alternatives ranked by AI · updated Aug 2026
Certbot is a free, open-source ACME client that obtains and renews TLS certificates, primarily from Let's Encrypt. It is designed for administrators who want automated certificate installation on common web servers.
Top 6 Certbot alternatives
Let's Encrypt is a free, automated, and open Certificate Authority that provides TLS/SSL certificates for websites.
Caddy is a powerful, extensible server platform that uses HTTPS by default.
Free, with optional paid features
SSL For Free is a web service for issuing free TLS certificates for websites and domains. It is aimed at site owners...
Pros
- Browser-based certificate issuance requires less setup than command-line ACME tools
- Supports common domain validation methods and wildcard certificates
- Provides a dashboard for managing certificates and renewals
Cons
- Free certificates generally require renewal every 90 days
- Less automation and server integration than Certbot or Caddy
- Account and validation workflows can be slower than direct Let's Encrypt automation
Free; paid plans available
ZeroSSL is a free SSL certificate provider that offers easy certificate creation, management, and renewal with automation tools.
acme.sh is a lightweight, shell-based ACME client for issuing and renewing TLS certificates from compatible certificate authorities. It targets developers and administrators...
Pros
- Runs with minimal dependencies on many Unix-like systems
- Supports numerous DNS APIs for automated wildcard validation
- Works with multiple ACME certificate authorities rather than only one
Cons
- Less approachable than SSL For Free for nontechnical users
- Shell-script configuration can be difficult to debug
- Does not provide a polished certificate-management dashboard
Free and open source
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