This document compares Google Analytics, Adobe/Omniture SiteCatalyst, and an in-house web analytics system. It provides an overview of Wikimart's custom system, including its data collection, storage, and users. Key areas of comparison include commerce metrics, campaign management, data export/import, product analytics, and support. The document concludes that for a large e-commerce site like Wikimart, SiteCatalyst is best for deep product analysis and managing a large number of marketing campaigns, while an in-house system enables deep analytics and integration with offline data.