certificate

An open source GUI replacement for the Java command-line utilities keytool and jarsigner

Certbot is a free, open source software tool for automatically using Let's Encrypt certificates on manually-administrated websites to enable HTTPS.

Enable cross-browser usage of local certificates & smart cards

Easily install and auto-renew free SSL/TLS certificates from letsencrypt.org and other ACME Certificate Authorities for your IIS/Windows servers. Setting up https has never been easier.

Windows Secure Shell Client With Support For Smart Cards & Certificates

An open-source SSL certificate management tool that helps you automatically apply for and deploy SSL certificates, as well as automatically renew them when they are about to expire.

CLI tool dump the signing certificate from a portable executable.

Alipay key tool

MsixCertImportTool Setup

Native messaging agent for Master Signer ICP-Brasil digital signature

CertAid manages the entire MIT personal certificate setup procedure, giving users a more reliable installation experience. It installs the certificates which identify MIT users to various protected sites.

Let's Encrypt/ACME client and library written in Go