Codebender.cc Arduino Communication
Using this plugin you can access Arduino-like devices, and serial ports in general, and program any Arduino-compatible device from your browser.
Combine this with the codebender  Arduino IDE, to develop faster, and easier, without installing and managing software from multiple computers, and easily transfer your sketch/program to your Arduino.
Win 8/8.1 USERS:
Unfortunately, the Chrome Store doesn’t allow you to download NPAPI plugins for Windows 8/8.1. Don’t worry, you can just download and install it from here .
NOTICE: Because the plugin runs outside the “sandbox”, the Chrome store gives you a really scary warning about permissions. Actually, the plugin only needs permissions to access your serial/usb devices.