Found 2 packages
Squared Infinity ▪ Collections ▪ ObservableCollectionEx Types: SquaredInfinity.Collections.IObservableCollectionEx SquaredInfinity.Collections.ObservableCollectionEx
This package contains a library of upcastable lists/list wrappers that implement the observable pattern, invoking events when a list is modified, and a set of list bindings that synchronize the content of observable lists using a mapping between item types.