RankTracker is a piece of SEO software to both research keywords and track rankings.
RankTracker allows you to unearth unending number of niche-specific keywords in a matter of minutes! It uses 19 different keyword suggestion methods, including Google AdWords Keyword tool, competition research, etc. Moreover, workspace filters allow you to easily manage your keyword list that's also exportable to another SEO project. RankTracker tracks your site's rankings in 314 international and local search engines. It also builds a Progress Graph to demonstrate how your rankings change over time.
Rank Tracker comes in three editions: Free, Professional ($124.75), and Enterprise ($299.75).