SimilarWeb

[nextmiledigital]

This tool can help you view website statistics for any domain, thus helping you to compare traffic between two websites. This is why this tool is considered as one of the most helpful one for competitor research.

[jennypitula]

Yes, I all time prefer this tool for doing competitors' researches. Not only for the competitors' research but also for individual site research this tool is great, for traffic analysis it is great.

[alpa]

You can use Moz,Semrush competitores reseach backlinks site anlysais and then fallow up