This keyword tool is one of the most familiar keyword selection tool used by search engine experts. Wordtracker provides a full trial version for 14 days just for 1$.
Wordtracker provides a number of keywords and phrases that can be used to analyze and target your business.
You can also get a full refund after 30 days if you feel the product is not worth the value. This is definitely worth a try for a serious search engine expert or if you wish to know what are the keywords you need to target to bring in the right visitors for your business.