It's a website like ahrefs where we can get analytics of our and our competitors websites but the problem is its too expensive I purchased one premium 3 month pack which was at that time worth 99$ per month I thought I could get the full analytics of my website I got the answer but it was not accurate in ahref you can get the whole information about your competitors website like which keyword he is ranking for, where he got the backlinks so that you can also make strategy to defeat your competitors so in this website I got some backlinks of my competitors but my website didn't rank then I came to know that I didn't get the perfect information about my competitors. So I would recommend everyone to go for ahrefs which is extremely good.