I collaborated on a project with Eric Mill ( @konklone) to help people test their HTTPS certificates for weak signature algorithms. SHA-1 was the standard, but is too weak. People should use a form of SHA-2.

IndieWeb tools

This library consists of various useful tools for running an IndieWeb aware site.

Webmentions Parser

A tool to parse incoming webmentions to a site, including determining the author of the source webmention.