LeechCraft is a modular Internet client. It allows you to browse the Web; read RSS/Atom feeds; download files via BitTorrent, FTP, and HTTP; automatically download, play, or stream podcasts (and other media files); and much more.
Flock is a sleek, modern Web browser with the built-in ability to keep you up-to-date with your Facebook and Twitter friends. It lets you share Web pages, photos, and video. It also lets you update your status and make comments from anywhere on the Web.