LyciaDesktop is a .NET thin client which requires .NET Framework 4. It can probably be called the most powerful, extensible and fastest graphical thin client of all available today.  

LyciaDesktop gets with the most recent developments and upgrades, it fully supports Microsoft WPF technology, is highly extendable, and combines graphical user interface, dynamic documents and media contents. This client also supports the new way to customize the feel and look of your programs by means of an intuitive interface called Theme Designer. All these features make the process of the application development and usage simpler and faster, and guarantees that the highest demands will be granted and the most complicated tasks will be performed in the best way.

The .Net framework makes LyciaDesktop an ideal candidate for desktop deployments in the Microsoft Windows infrastructure and is intended to replace Phoenix client on Windows Platforms.