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Certbotacme.sh
Free

Free and open source under the Apache 2.0 licence; certificates from Let's Encrypt are…

 Free

Free and open source under the GPL-3.0 license.

macOS, Linux, Command line Command line
  • Gets free HTTPS certificates from Let's Encrypt
  • Can configure Apache and Nginx automatically
  • Issues and renews certificates through ACME
  • Supports wildcard and ECDSA certificates
  • Requires comfort with the command line
  • Needs shell access to the web server, which some hosts do not give
  • Requires a Unix shell environment.
  • Certificate issuance and renewal require access to an ACME service.
Downloadable app Downloadable app
Open source Open source
License: Apache-2.0 License: GPL-3.0-only
No account needed Not stated if an account is needed
Needs internet Not stated if it works offline

Checked October 1, 2026

Checked October 8, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.