Traditionally speaking, you need to download software to your computer if you want to upload a program to your Arduino. CodeBender allows you to code from your browser, share your work to the cloud and collaborate with others.
CodeBender supports uploading to pretty much any Arduino board connected with a USB cable. Within it, you can browse other people's code, upload your own, and store everything you do so you can access it anywhere. It's a nice one-stop shop for all your Arduino coding needs and since you don't need to download anything you can sneak