A preliminary version of Enhanced Steam is now available for Microsoft Edge. You can install it by following the instructions found here:
This version was built using Microsoft’s new Edge Extension Toolkit application, and a few manual changes I made through testing. There are a few issues that users may encounter in this release so I’m not yet linking it to the website’s download page until those issues are resolved. Hopefully I’ll be able to get these issues resolved soon.
I’m also contacting Microsoft to see about having the extension listed in the Microsoft Store, hopefully they have an automated system in place soon for developers to publish extensions there. Keep an eye on this blog and I’ll update everyone as soon as I know anything on this front.