Hi,
1. Do i need a roku box to develop a channel for Roku?
Yes, you do.
2. Is roku box and its services available in india ?
We don't sell them or support them in countries other than USA, Canada, and UK / Ireland. The devices themselves should work anywhere there is a standard wireless or ethernet connection. You may be able to buy them on Ebay, Amazon or Craigslist. Probably a UK version of the player would have more compatible electrical function.
Some channels will not function outside of their designated regions. When you link the device you would see the Rest Of World channel store.
3. Is there any web tool or simulator for development and testing?
No, there is not. Source code must be loaded onto the device in a Zip file, the device compiles and executes the code, there are no emulators.
- Joel