OptimizeXP Internet/Network Edition 

Optimize and tweak your Windows XP Internet and Network settings to increase your internet speeds and make your network more stable. OptimizeXP comes with over 20 tweaks and optimizations.
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Tweak O Matic 

Take control of Windows with tons of powerful system and registry tweaks, and boost your Internet download speeds up to 300% with the built-in Internet Accelerator. Includes tweaks for user interface, increased performance, software, Net & Security
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Systerac XP Tools 

Systerac XP Tools are an amateur and professional's tool for optimizing windows xp performance, identify problems and bottlenecks and make sure that your PC is running at top efficiency and speed. Tweak your XP for optimal results.
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Tweak-XP Pro 

See what this program offers: unlike other tweaking utilities, Tweak-XP bundles more than 56 different utilities in one: it was developed to combine both tweaking and optimizing features to increase the speed of your Windows XP system.
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