SEMRush - All-in-one Marketing Toolkit for digital marketing professionals.
SE Ranking - All-in-One cloud-based SEO software for agencies, marketing teams and webmasters
SEOmator - SEO website analysis & audit tool
DeskAlerts - Send alerts to any corporate device: PCs, phones, tablets, etc.
Lumar - (Previously DeepCrawl) Hosted SEO spider to analyze and find problems with websites.
SEOquake - SEOquake provides a browser extension to conduct on-page SEO audit.