ZeroSSL - Free & Premium SSL Certificates with Easy Automation

ZeroSSL is a certificate authority offering tools to secure websites through SSL certificates.

Features

• SSL Certificates: Provides free 90-day certificates and premium 1-year options, including wildcard and multi-domain support.
• One-Step Validation: Simplifies the validation process via email, server uploads, or CNAME verification.
• ACME Integration: Supports automated certificate issuance and renewal through ACME protocol compatibility.
• REST API: Offers a RESTful API for automating SSL certificate management tasks.
• SSL Monitoring: Provides tools to monitor SSL certificates and ensure their validity. 

Pros

• User-Friendly Interface: Intuitive platform suitable for users with varying technical expertise.
• Comprehensive Features: Offers a wide range of SSL management tools, including monitoring and automation.
• Broad Compatibility: Certificates are trusted by 99.9% of browsers and platforms. 

Cons

• Free Plan Limitations: The free plan allows up to three 90-day certificates, each securing only one domain without subdomains or wildcards.
• Advanced Features Require Payment: Features like 1-year certificates and wildcard support are available only in paid plans. 

Free Plan Details

• 90-Day Certificates: Issue up to three free 90-day certificates.
• ACME Protocol Support: Unlimited 90-day certificates can be issued using the ACME protocol.