Microsoft's Xamarin is a cross-platform mobile app development framework that enables businesses to reach 2.6 billion devices with 100% fully native apps from a single shared code base using C#. It has over 1.4 million developers worldwide and offers a wide range of functionalities, making it suitable for various fields and domains. Xamarin-powered apps have been successfully developed by companies such as Supergiant Games, 17-BIT, STORYMATIK SOFTWARE, UNIPESSOAL, LDA, Giving.com Limited, Alaska Airlines, Atlantic & Pacific Business Travel Limited, MRW Courier, Novarum DX, Vanderlande, Insightly Inc, Signire Technologies Private Limited, Crédito Agrícola, Captio Tech, S.L., and the World Bank. These apps cater to different categories such as games, photo and video, lifestyle, travel, maps and navigation, business, finance, and more. Xamarin's cross-platform development capabilities have enabled companies to create mobile apps with a wide range of functionalities, including tracking shipments, managing customer interactions, automating business expense management, and more.