Before getting my moto x and being exposed to Connect, I used Pushbullet on older Thunderbolt and also have in tablet.
Shows you people calling, can reply to txt msgs on computer, can send files to all devices/websites linked, and it's all free.
You need pushbullet from the play store and search for it in Chrome extension on pc.
Works great.
My Asus tablet, and HTC Thunderbolt, and now my moto all push notifications as they come in onto my computer screen.
I think what I like best is, when searching for wallpapers or pictures/memes on computer, I simply right click to open picture in pc browser for full view, then I right click again and pushbullet it to my device... Next thing you know is that the image is saved in your phone's gallery.. Can apply image as background.
Can also push supermarket list, notes, maps.. Really useful app.