ArtNet, started in 1999, revolutionized the way the art world operates by bringing a comprehensive network online. It serves as a platform for buying, selling, and researching art. The site features an extensive database of artists, galleries, auction results, and trends in the art market. It's widely used by collectors, dealers, and art enthusiasts for its vast resources, including an auction house database, a gallery network, and a magazine focusing on the latest in the art world. ArtNet made art more accessible and transparent, significantly impacting the art market's dynamics.