Etsy is an e-commerce website that focuses on handmade, vintage, and craft supplies. It was founded in 2005 by Rob Kalin, Chris Maguire, and Haim Schoppik. The platform provides a marketplace for individual sellers and small businesses to list and sell their unique and creative products to a global audience.

The primary categories of items found on Etsy include handmade products, vintage items (at least 20 years old), and craft supplies for creating handmade items. Some common items available on Etsy include jewelry, clothing, home decor, art, craft supplies, and personalized gifts.

One of the key features of Etsy is its emphasis on supporting independent artisans and sellers. Many of the products available on the platform are one-of-a-kind or limited edition, making it a popular destination for individuals looking for unique and personalized items.

Etsy also allows sellers to set up their own online shops, where they can customize their storefronts, manage inventory, and interact with customers directly. Buyers can browse through the various shops, read reviews, and contact sellers with any questions before making a purchase.

Over the years Etsy has grown in popularity and has become a significant platform for small businesses and creative entrepreneurs to reach a global customer base. It has also expanded to offer additional features and services, including Etsy Wholesale for bulk purchasing and Etsy Studio, a platform dedicated to craft supplies.

Please note that the information provided here is based on the knowledge available up to September 2021, and there might have been further developments or changes to Etsy's features and policies beyond that date.