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KeyManagerCertbot
Free

Free download for Windows, macOS and Linux.

 Free

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

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

Checked October 2, 2026

Checked October 1, 2026

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