Key value list developed by Infocaster, Arnhem, The Netherlands is a package with a dropdown property editor with displayvalues. Displays 'key' to content editors, but returns 'value' in the code.
Key Value List is an Umbraco plugin that makes the developer's life easier. It gives a value to topics from your database. Suppose you develop the website of the Burgers' Zoo animal park (because Infocaster does that) and all animals have a certain habitat, which you want to show on your website. Then you use the Key Value List to ensure that each habitat is equal to a certain number.