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Ahrefs

Ahrefs is a search marketing platform built around a large proprietary web index, giving users tools to research keywords, analyze competitor backlinks and traffic, track search rankings, and find technical SEO issues on their own sites. Core modules include Site Explorer for competitor analysis, Keywords Explorer for search demand research, Rank Tracker for monitoring positions, Content Explorer for content and link opportunities, and Site Audit for technical SEO checks.

Semrush

Semrush is a digital marketing platform covering SEO, content, advertising, and competitive research from a single dashboard. Its keyword research draws on a database of billions of keywords, backlink analysis covers trillions of tracked backlinks, and its site audit tool flags technical SEO issues across a domain, alongside competitor traffic and market analysis covering hundreds of millions of domain profiles. Beyond traditional SEO, Semrush has added AI Visibility tools that track how brands appear in AI-generated answers from tools like ChatGPT, plus AI-powered content creation, local SEO management, advertising research, and social media planning. It's used by SEO specialists, content marketers, agencies, and enterprises, with plans scaling from a single-site starter tier up to custom enterprise pricing.

Moz Pro

Moz Pro is an SEO platform combining keyword research through Keyword Explorer, rank tracking across search engines and locations, site crawling and auditing for technical SEO issues, and competitive and SERP analysis. Newer AI-powered features analyze search intent, group keyword suggestions, and surface brand-mention insights across AI/LLM search results in addition to traditional Google rankings. Every plan includes MozBar, a browser SEO toolbar, on-page optimization grading, custom reporting for agencies and in-house teams, and access to Moz Academy's SEO training courses. Moz Pro is priced across four tiers from Starter at roughly $39/month (billed annually) up to larger-scale plans, targeting SEO professionals, agencies, and marketers who need both day-to-day SEO tools and a way to prove results to clients or leadership.

Mangools

Mangools is a suite of SEO tools built for solopreneurs, freelance SEOs, and small marketing teams who want an easier alternative to complex enterprise SEO platforms. The suite includes KWFinder for keyword research, SERPChecker and SERPWatcher for SERP analysis and rank tracking, LinkMiner for backlinks, and SiteProfiler for competitor research. The company reports a database of over 2.5 billion keywords and 30 million SERPs across more than 65,000 city-level locations, and also offers several free no-signup tools like a SERP Simulator and AI Search Grader.

Serpstat

Serpstat is a search marketing platform providing keyword research for SEO and PPC campaigns, competitor analysis that reveals traffic, visibility, backlinks, and ad strategies, and a rank tracker that monitors website rankings across mobile and desktop in 230 countries. Its site audit tool identifies and helps fix on-site issues to improve search rankings, while keyword clustering organizes terms by thematic similarity. The platform also includes a website traffic checker and API/data solutions for teams that want to build Serpstat data into their own tools. It's browser-based with extensions for Chrome, Firefox, Edge, and Opera, and reports over 1.1 million users including agencies, e-commerce businesses, SMBs, SaaS companies, and named clients like Deloitte, Rakuten, Visa, Uber, Shopify, and Samsung.