The seo software supports all major international search engines. All popular search engines (Google, Bing, Yahoo! Search, Alexa, Cuil, Ask, Exalead, Altavista, Yandex, Gigablast, IceRocket, Sperse, etc) are supported and to top this off if a search engine definition is not already included in the software then you can easily add new definitions.
The seo software is multi threaded. Once you click HARVEST the SEO toolkit starts by querying multiple search engines multiple times through different proxies. It gathers data very fast and always checks for duplicates. In order to vary search engine queries the seo software has an advanced dictionary support. Below is a screenshot of the seo software gathering results for the link:http://www.yoursite.com query (a specific search engine query for finding backlinks).