Topvizor, Zennoposter, Key Collector
It’s becoming increasingly difficult to achieve high levels of Google ranking. Some tasks simply cannot be completed without a good proxy pool. When collecting keywords and queries, it is simply necessary to use the IP of certain GEO locations. Monitoring SEO positions of competitors, wrapping up a behavioral factor, collecting and analyzing the semantic core is only a small part of those tasks where a resident proxy sheet is needed.