AliNiche is a Chrome extension that serves as a product research tool for AliExpress. It provides a comprehensive analysis of each product, including sales trends, pricing, profit potential, customer feedback, and more. The tool also offers smart product recommendations based on product similarity and trending products. Additionally, users can download product images, videos, and reviews directly from AliExpress. Overall, AliNiche is a valuable tool for dropshippers and online retailers looking to identify profitable products on AliExpress.