* [https://scrapy.org/ Scrapy] Open source python framework, not dedicated to search engine scraping but regularly used as base and with a large number of users.
* [http://scraping.compunect.com Compunect scraping sourcecode] - A range of well known open source PHP scraping scripts including a regularly maintained Google Search scraper for scraping advertisements and organic resultpages.
* [http://google-rank-checker.squabbel.com/ Justone free scraping scripts] - Information about Google scraping as well as open source PHP scripts (last updated mid 2016)
* [http://simplehtmldom.sourceforge.net/ PHP Simpledom] A widespread open source PHP DOM parser to interpret HTML code into variables.
*[https://serpapi.com/ SerpApi] Third party service based in the United States allowing you to scrape search engines legally.
*[https://scrapingdog.com/google-search-api/ Scrapingdog] API for extracting data from Google search results.
