ShareDrop - HTML5 clone of Apple's AirDrop - easy P2P file transfer powered by WebRTC
AirDroid - Access Android phone/tablet from computer remotely and securely. Manage SMS, files, photos and videos, WhatsApp, Line, WeChat and more on computer.
Clipt - Clipt seamlessly and safely transfers text, photos, videos, and files between your devices by connecting your phone & laptop clipboard.You shouldn't be punished for having more than one device - install Clipt and watch your productivity soar.
instashare - Share your photos to instagram from your mac
SpaceDrop - Peer to peer file and text exchanging web application
Pushbullet - Pushbullet - Your devices working better together