TCP Optimizer Short Description:
TCP Optimizer is free software that optimizes and tunes your Internet connection
TCP Optimizer Long Description:
TCP Optimizer is a free, easy to use Windows program that helps tune and optimize your Internet connection. The program can help both the novice and advanced user change related TCP/IP Netsh and Registry parameters, such as the TCP Receive Window, MTU, even QoS and ToS/Diffserv prioritizatioin. There is no installation required, just download and run.
The software supports all current Windows versions, allows for allows for backung up current settings, restoring to the Windows defaults, measuring latency across multiple hosts and more.