Windows Fundamentals for Legacy PCs ("WinFLP") is a thin client release of the Windows NT operating system developed by Microsoft and optimized for older, less powerful hardware. It was released on July 8, 2006, nearly two years after its Windows XP SP2 counterpart was released in August 2004, and is not marketed as a full-fledged general purpose operating system, although it is functionally able to perform most of the tasks generally associated with one. It includes only certain functionality for local workloads such as security, management, document viewing related tasks and the .NET Framework. It is designed to work as a client–server solution with RDP clients or other third party clients such as Citrix ICA. Windows Fundamentals for Legacy PCs reached end of support on April 8, 2014 along with most other Windows XP editions. History Windows Fundamentals for Legacy PCs was originally announced with the code name "Eiger" on 12 May 2005. ("Mönch" was announced as a potential follow-up project at about the same time.) The name "Windows Fundamentals for Legacy PCs" appeared in a press release in September 2005, when it was introduced as "formerly code-named “Eiger”" and described as "an exclusive benefit to SA [Microsoft Software Assurance] customers". A Gartner evaluation from April 2006 stated that: The RTM version of Windows Fundamentals for Legacy PCs, which was released on July 8, 2006, was built from the Windows XP Service Pack 2 codebase. The release was announced to the press on July 12, 2006. Because Windows Fundamentals for Legacy PCs comes from a codebase of 32-bit Windows XP, its service packs are also developed separately. For the same reason, Service Pack 3 for Windows Fundamentals for Legacy PCs, released on October 7, 2008, is the same as Service Pack 3 for 32-bit (x86) editions of Windows XP. In fact, due to the earlier release date of the 32-bit version, many of the key features introduced by Service Pack 2 for 32-bit (x86) editions of Windows XP were already present in the RTM version of Windows Fundamentals for Legacy PCs. Service Pack 3 is the last released service pack for Windows Fundamentals for Legacy PCs. In May 2011, Microsoft announced Windows Thin PC as the successor product. Technical specifications Microsoft positions Windows Fundamentals for Legacy PCs as an operating system that provides basic computing services on older hardware, while still providing core management features of more recent Windows releases,