MegaIndex has its own crawler. This crawler scans the entire Internet. I like the fact that MegaIndex has its own exclusive backlinks database. I like the fact that MegaIndex provides the ability to filter links: SEO / ORG. Such a tool is very useful and is very rare. I like the fact that in the service MegaIndex any user can find all the links from the site. Using this tool I find all SEO links on my site, which are posted in the comments. I like the fact that I can see Trust Rank and Domain Rank, as well as the number of referring IP addresses for any domain name. I use it when I choose sites for outreach. I like the fact that MegaIndex has support via Skype. There is a free version.