What software should I use to develop apps for the android market?

I am running windows 7. I really want to design a couple apps and get them out on the market.



What is the best software to use?

Is there free software available?

Do you have any tips for me on getting started?What software should I use to develop apps for the android market?
I think you can refer to the android developing community, to learn what is to develop and what you can use for developing. It's better to do research, either on products or market. Hope this will help you.

here is the site you can refer to,
http://developer.android.com/sdk/

and as android is an open source, there are lots of tools or software you can used for. You can search them online.