Ecosyste.ms: Packages

An open API service providing package, version and dependency metadata of many open source software ecosystems and registries.

nuget.org "Associations" keyword

fileassociation 1.0.0
An simple library for modifying File Associations from .Net code.
1 version - Latest release: over 11 years ago - 6 dependent repositories - 22.5 thousand downloads total - 1 maintainer
assocsupport 1.1.0
Windows File Associations Support Library
2 versions - Latest release: over 5 years ago - 2.28 thousand downloads total - 7 stars on GitHub - 1 maintainer