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Let's Encrypt

Let's Encrypt is a free, automated

Free

Launch
#1890in Developer Tools
–In stores

Description

Let's Encrypt is a free, automated, and open Certificate Authority brought to you by the nonprofit Internet Security Research Group (ISRG).…

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Let's Encrypt FAQ

What is Let's Encrypt?

Let's Encrypt is a free, automated, and open Certificate Authority brought to you by the nonprofit Internet Security Research Group (ISRG). Read all about our nonprofit work this year in our 2025 Annual Report.

Is Let's Encrypt free?

Yes. Let's Encrypt is free to use.

Do I need to download Let's Encrypt?

No. Let's Encrypt runs in your browser at letsencrypt.org, so there's nothing to install.

What are the best Let's Encrypt alternatives?

Popular alternatives to Let's Encrypt include Infisical, Doppler and aikido.dev. See all Let's Encrypt alternatives