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CertbotKeyManager
Free

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

 Free

Free download for Windows, macOS and Linux.

macOS, Linux, Command line Windows, macOS, Linux
  • Gets free HTTPS certificates from Let's Encrypt
  • Can configure Apache and Nginx automatically
  • Generates keys and CSRs and merges issued certificates
  • AES-256 encrypted private key storage
  • Requires comfort with the command line
  • Needs shell access to the web server, which some hosts do not give
  • Website and documentation are in Chinese
  • Proprietary software tied to a certificate vendor
Downloadable app Downloadable app
Open source Closed source
License: Apache-2.0 License not stated
No account needed Not stated if an account is needed
Needs internet Not stated if it works offline

Checked October 1, 2026

Checked October 2, 2026

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