Flamingo is a beautiful, native instant messaging client for OS X that supports Hangouts/Gtalk, Facebook, and XMPP.

Highlights: • All-in-One design. Buddies, conversations, and chats in a single window. • Multiple, detachable chats in a single window. • Inline previews for images, videos, and tweets. Supports CloudApp, Droplr, Instagram, and YouTube. • File transfer via direct connection (compatible with Messages, Adium, and other clients), CloudApp, and Droplr. • Reply to messages right from the notification bubble in OS X 10.9. • Full conversation history browser with fast message search and many filtering options.