acme.sh

acme.sh is a shell-based client for the ACME protocol, listed in MirrorNest for Windows under the security category. It is intended for people who need to issue, renew, or install certificates through an ACME service, including free certificates from Let’s Encrypt. The tool is written purely in Shell and is designed to handle these certificate tasks through a single script.

The client provides a full ACME protocol implementation with support for both ACME v1 and ACME v2. It also supports wildcard certificates through ACME v2. acme.sh is compatible with bash, dash, and sh, and it does not depend on Python or the official Let’s Encrypt client. The script can issue, renew, and install certificates automatically, without requiring root or sudoer access.

Its design follows the KISS principle and avoids installing Cygwin, MSYS or MSYS2, curl, or OpenSSL. The source description also identifies Docker friendliness and IPv6 support as part of its scope. These characteristics make it relevant to users looking for a compact shell-oriented certificate client rather than a larger client installation.

MirrorNest does not mirror the acme.sh package and instead links directly to the official release. The license is currently unknown, so users should review the official release information for licensing details before use. As a Windows security entry, it presents acme.sh as a certificate-management utility distributed through a direct official-release link.