SAPIEN Technologies
SAPIEN Technologies makes Windows administrative tasks simpler. With more than 20 years of experience, best-in-class software applications, authoritative books, supportive communities, and real-world training SAPIEN offers everything you need to learn new technologies, advance your skills in existing technologies, and work more effectively and more efficiently.
Xtremesoft
Xtremesoft maximizes the availability of your custom built Microsoft applications built on, COM+, and .NET Enterprise Services. The focus is on monitoring, alerting and managing business transactions. This includes metrics on packages, applications, components, and their methods.
Xamarin
Xamarin was founded in May of 2011 in Boston, Massachusetts. Their mission is to produce the best software development tools in the world, and to make it fast, easy and fun to build great mobile applications. Xamarin is composed of more than 20 members of the team that built Mono, with ten years of experience working together to create a great developer platform.