Authority Labs

Authority Labs is a straightforward, accurate rank tracking tool trusted by many agencies. It tracks thousands of keywords across desktop, mobile, and local search engines with daily updates. Key features include white-label reporting, competitor tracking, and a robust API for custom integrations.

It focuses on doing one thing well. Targeted at SEO professionals and agencies needing reliable, white-label data for clients. Pricing starts at $49/month. It scores for its specialization, reputation for accuracy, excellent API, and clean interface that makes managing large keyword lists for multiple clients straightforward.