AmzChart is a Chrome extension called Amazon™ Price History Tracker that allows users to browse detailed price history charts for over 3 billion Amazon products. It provides historical price data and displays the lowest price and date in the upper right corner of the window. This extension is easy to use as no account is required to start viewing the price history. It supports all Amazon markets and is available in English and Chinese languages. It is a useful tool for both buyers and businesses as it helps monitor price changes and make informed purchasing decisions.