Another well hidden gem
from one of core members of the team
A collection of useful value converters and custom attributes. Like type=number on input, which will produce a number instead of string in your view model.
Guess it was created as part of a dayjob
Does not come with OSS license.
Does ask you to pay for it if you are using it in a commercial project.
Payment option does not work for Russia at least.
This one came up as a response to one of the issues I helped to triage