Paraben's I-Jolt 

Paraben's I-Jolt helps you optimize your Internet connection. By tweaking your Maximum Transmission Unit (MTU), Maximum Segment Size (MSS), Receive Window (RWIN), Time To Live (TTL), MTU Auto Discover, and more, you can obtain faster throughput.
speed internet connection boost modem tweak

Visual Trace Route 

FREE Visual replacement for the standard trace route utility. Friendly design, incredible speed, easy to use, three ways to launch, the best choice, the most reliable network connectivity control tool on the Internet. Cool and easy.
network tool ping pinging monitor tcp/ip friendly echo request internet connection connectivity delay host

Robust Internet Speed Booster 

Boost & optimize your Internet connection speed with this set of tools - A free utility to help you keep your system healthy and responsive. This program is a package of 3 utilities, a network pinger, and internet speed booster, and a Free Mem tool.
fast speed quick accelerate internet load optimize improve setting increase performance boost modem faster