Wordtracker

Wordtracker is a keyword research tool pitched as a free alternative to Google's Keyword Planner, returning large result sets per search so users can find longtail keywords for their market. A search takes a keyword or a domain, and the tool adds related terms, a SERP preview and a domain tool that shows competitors' keywords. A ranking feature tracks a domain's keyword position over time. The Scout browser extension surfaces high-performing keywords in seconds, and an API lets developers build their own products or services on the data. Its figures come from Google and its own proprietary search technology, and the interface is clean and uncluttered with no credit restrictions. Competitor keywords and PPC and SEO insights are presented as a market research tool that goes beyond keyword lookup.