Serpstat - Search analytics, Rank tracking, Backlink analysis and Site Audit tool.
SE Ranking - All-in-One cloud-based SEO software for agencies, marketing teams and webmasters
DeskAlerts - Send alerts to any corporate device: PCs, phones, tablets, etc.
Advanced Web Ranking - Advanced Web Ranking (AWR) is a robust rank tracker, specially designed for large amounts of keywords, which makes it the ideal solution for agencies and medium-to-large in-house teams.
SEMRush - All-in-one Marketing Toolkit for digital marketing professionals.
DataForSEO - DataForSEO offers API data for SEO companies that deliver results of tasks for Rank tracking, SERP, Keyword data and On-page APIs.