There is no single required toolset, and any company that claims its software is a secret advantage should be treated with caution. What matters is whether the company uses a sensible, accountable set of tools that gives you visibility into real data. Below is the core you should expect, and why the people behind the tools matter more than the tools themselves.
The free Google tools are non-negotiable
Two tools should be in use on every engagement, and they cost nothing. The first is Google Search Console, which reports how your site actually appears in Google search: the queries that bring impressions and clicks, your average position, indexing status, and any crawl or coverage problems. It is data that comes directly from Google, so there is no substitute for it.
The second is Google Analytics 4 (GA4), which shows what visitors do once they arrive. An SEO company should connect both, and link them together, so it can see not only what ranks but whether that traffic engages and converts. If a company is not set up in your Search Console and Analytics from the start, it cannot measure its own work honestly. Ask to be given access to both accounts as the owner, so the data stays yours.
A credible research and tracking platform
For keyword research, competitor analysis, backlink review, and rank tracking, expect the company to use an established all-in-one platform. The well-known commercial options include Ahrefs and Semrush, both widely used across the industry. You do not need to dictate which one. What you should expect is that the company uses a recognized, subscription-grade tool rather than relying on guesswork or unverifiable in-house software. These platforms also let the company estimate search demand and monitor where you rank over time, which is the basis for honest progress reporting.
A crawler for technical work
Technical SEO work needs a site crawler that inspects every page the way a search engine would, flagging broken links, redirect chains, duplicate titles, missing tags, and indexing barriers. Screaming Frog SEO Spider is the long-standing standard for this kind of audit, and several research platforms include their own site audit features as well. The point is that a company doing technical work should be running a crawler, not eyeballing a handful of pages. If they performed an audit, the underlying crawl data should be available to you on request.
Page speed and Core Web Vitals tooling
Page speed is part of how Google judges page experience, measured through Core Web Vitals. Google provides this data for free: PageSpeed Insights combines a lab test with real-world data from the Chrome User Experience Report, and Search Console includes a Core Web Vitals report grouped by page type. Chrome’s built-in developer tools cover deeper diagnostics. An SEO company addressing site performance should reference these sources, because they reflect how Google actually evaluates your pages rather than a vanity score.
The skill matters more than the software
Every tool above is available to anyone, and most of the truly essential ones are free. That is the key point for a buyer: tools do not produce results, people do. Two companies can run the identical platforms and deliver very different outcomes, because the value lies in reading the data correctly, prioritizing the right fixes, and turning findings into work that actually gets done.
So when you evaluate a company, do not be impressed by a long list of software, and do not be swayed by claims of proprietary tools that cannot be inspected. Instead, ask how they use their tools: how they decide what to work on, how they verify a change worked, and how they will show you the same numbers they see. A company that gives you direct access to Search Console and Analytics, explains its reasoning in plain terms, and reports against real data is using its tools the way they should be used. That transparency is worth far more than any particular brand on the invoice.