Need a web crawler which can crawl and index websites made using WIX

WIX is a online tool to create webpages. I need a web crawler which can crawl and index websites made using WIX. WIX site having a meta data which you can use to identify if a site is made using WIX or not, once you found WIX site then you need to keep its URL in database. Its simple crawler but need to crawl through extreme depth and one who has experience with crawlers can easily code it.