Semrush, ahrefs, SEO PowerSuite, SEOprofiler, Rank Tracker, Small SEO Toolz, SEO Tools Centre, Serpstat, Open Site Explorer, SEOmator, Advanced Web Ranking, SeoWebChecker, Marketing Miner, Monsido, Backlink Monitor, SEO Guard, MarketGoo, LinkDiagnosis, Seotoolzz, SerpToday, Irayo, Rankinity, Mintent, CircleClick are some alternatives to Nightwatch.