The Search Engine Scraper allows you to scrape the search results for a given search query, and has as output a list of results the search engine returned for the query. You can choose which search engine you want to scrape; this allows comparison between search engines and what results they return for the same query. In this there is some overlap with the Lippmannian Device, which also scrapes search results, but has the additional feature of offering a comparison of results within a particular site. If the per-site search is not required for your analysis, this tool - the Search Engine Scraper - will likely be easier to use.