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LSSL certificatesFull list
Certificates and automated renewal.
3 tools2 with a free plan2 with an API
Subcategories · 6SSL certificates
3 tools
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Free
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Free, automated TLS certificates for any website from a nonprofit CA
SSL certificatesFree planAPI
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ZFree and paid SSL certificates with ACME automation, REST API and site scans
Free, from $14.99/mo
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Free, from $14.99/mo
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Free and paid SSL certificates with ACME automation, REST API and site scans
SSL certificatesFree planAPI
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Free trial
How to choose ssl certificates tools
Most SSL certificate tools issue the same kind of TLS certificate. Where they differ is in how you pay, how renewal works and how much management you get on top.
- Pricing model. Let's Encrypt is free and run by a nonprofit CA. ZeroSSL has a free tier, and its paid plans start at $14.99/mo. Sectigo is a commercial provider that offers a free trial.
- Automation and API. Certificates expire, so automatic renewal matters. Let's Encrypt is built around automated issuance. ZeroSSL supports ACME automation and also has a REST API.
- Interface. Let's Encrypt is used only through its API and client tools, with no web dashboard. ZeroSSL and Sectigo both offer a web interface, which helps if you'd rather not work from the command line.
- Lifecycle management. If you run many certificates across an organization, look for tools that track and renew them all in one place. Sectigo lists automated certificate lifecycle management, and ZeroSSL adds site scans.
We haven't tested these tools ourselves. Check each provider's current terms before you commit.
Frequently asked questions
Are there free SSL certificate options?
Yes. Let's Encrypt gives out free, automated TLS certificates for any website. ZeroSSL has a free tier along with its paid plans. Sectigo offers a free trial.
How much do SSL certificate tools cost?
Let's Encrypt costs nothing. ZeroSSL's paid plans start at $14.99/mo. Our list doesn't include Sectigo's prices beyond the free trial, so check its site for current pricing.
What should I look for in an SSL certificate provider?
Look for automated renewal, ideally through ACME or an API, plus a pricing model that fits your budget. Decide whether you need a web dashboard or are happy working through an API. If you manage many certificates, look for lifecycle management, which Sectigo offers.
What are the alternatives to Let's Encrypt?
ZeroSSL also supports ACME automation, and it adds a REST API, a web interface, site scans and paid plans. Sectigo sells commercial SSL/TLS certificates with automated lifecycle management through a web interface.