77 tools for SEO and web research in one site

Website mentioned in this post is no longer available. SEO and web research for competitive keywords ,PageRank ,and anything like that may take you a lot of time . In internet ,there are many services ,and each of them can do only several tasks ,so you have to pass over many sites for completing the research . But I found an interesting website ,it contain 77 free tools for SEO and web research