SEO tools are the category where small businesses most often buy the expensive thing and use ten percent of it. The platforms are built for agencies managing dozens of clients, and their pricing reflects that.
Before spending anything, it is worth knowing that the three most useful SEO tools available are free, and most small businesses have not connected all three.
Start With the Free Ones
1. Google Search Console
The single most valuable SEO tool, free, and routinely underused.
It tells you which queries you actually rank for, your real position, your real click-through rate, which pages Google has indexed, and which have problems. That is your own data, direct from Google — not an estimate.
The Performance report alone answers most questions small businesses pay tools for: what am I ranking for, what am I nearly ranking for, and which pages get clicks.
If you connect one thing this week, make it this.
2. Bing Webmaster Tools
The equivalent for Bing, and it includes a keyword research feature with actual volume data at no cost. Worth having even if Bing traffic is modest, because the keyword tool is genuinely useful.
3. Google Analytics 4 or a privacy-focused alternative
Tells you what people do after they arrive. Note that Universal Analytics stopped processing data in 2023, so anything you read describing the old interface is obsolete. Plausible and Fathom are simpler, cookie-free alternatives.
4. Screaming Frog SEO Spider
Desktop crawler with a free tier covering a useful number of URLs. Best in class for technical auditing — finds broken links, redirect chains, missing titles, duplicate meta descriptions and orphaned pages.
For a small site, the free tier may cover your entire website.
5. PageSpeed Insights
Free, from Google, showing both lab data and real-world Core Web Vitals from actual visitors. The field data is what Google uses; the lab score is a diagnostic.
Paid Tools Worth Considering
6. Ahrefs
Best-in-class backlink data and a clean interface. Its Webmaster Tools tier is free for sites you verify ownership of, covering backlinks and a site audit for your own domain.
Suits: businesses where link building or competitor link analysis drives decisions. Watch: expensive, with credit-based usage limits and per-seat costs.
7. Semrush
Broader — SEO, PPC research, local SEO, content and social in one platform.
Suits: businesses wanting one subscription across several marketing functions, especially with paid search alongside.
8. Mangools (KWFinder)
Pleasant, affordable, focused on keyword research and rank tracking without platform weight.
Suits: small businesses that want keyword research and nothing else. Frequently the right answer.
9. SE Ranking
Capable all-rounder at meaningfully lower cost than Ahrefs or Semrush — rank tracking, site audit, keyword research and competitor analysis.
Suits: small agencies and businesses wanting platform breadth on a real budget.
10. Moz Pro
Established, generally cheaper than the big two, with a useful free tier and good learning resources.
11. Yoast SEO or Rank Math (WordPress)
Plugins rather than research tools. They control your titles, meta descriptions, canonicals, sitemaps and structured data — the on-page mechanics.
Both have capable free versions. If you run WordPress you need one of these, and it is a different purchase from a research platform.
12. Sitebulb or Ahrefs Site Audit
Technical auditing with clearer prioritisation than Screaming Frog for non-specialists. Sitebulb explains why something matters, which Screaming Frog does not.
How They Compare
| Tool | Category | Free option | Best for |
|---|---|---|---|
| Search Console | Your own performance | Free | Everyone, first priority |
| Bing Webmaster Tools | Performance + keywords | Free | Free keyword volume |
| Screaming Frog | Technical crawl | Yes, limited URLs | Technical audits |
| PageSpeed Insights | Core Web Vitals | Free | Performance diagnosis |
| Ahrefs | Links, keywords | Webmaster Tools | Link-led SEO |
| Semrush | Full marketing suite | Limited | SEO plus PPC and local |
| Mangools | Keyword research | Trial | Affordable research |
| SE Ranking | All-rounder | Trial | Value platform |
| Moz Pro | All-rounder | Limited free | Learning, value |
| Yoast / Rank Math | On-page WordPress | Yes | Controlling your own tags |
| Sitebulb | Technical audit | Trial | Prioritised technical fixes |
Paid tool pricing changes regularly and usage limits often bind before price does. Check credits, tracked keywords and seat costs against your actual use.
Treat Third-Party Numbers as Estimates
Worth stating plainly, because these figures get quoted as fact in strategy documents.
Search volume, keyword difficulty, traffic estimates and domain authority scores from Ahrefs, Semrush, Moz and others are modelled, not measured. None of these companies has Google’s data. Volumes are derived from clickstream and other signals; traffic figures are inferred from rankings and assumed click curves.
Practical consequences:
- The same keyword shows different volumes in different tools. Neither is wrong; both are estimating.
- Use them for relative comparison, not forecasting.
- Domain authority is a vendor metric, not a Google ranking factor. Google does not use it.
- Competitor traffic estimates are frequently far off. Never quote them as fact.
- Your own Search Console data beats any estimate for your own site.
What a Small Business Actually Needs
A realistic stack, in order:
Free tier, week one: Search Console, Bing Webmaster Tools, an analytics tool, and Yoast or Rank Math if you are on WordPress. That covers on-page control and knowing what you rank for.
Add when you start publishing regularly: Mangools or SE Ranking for keyword research and rank tracking. This is the first purchase that pays for itself.
Add when competitor research drives decisions: Ahrefs or Semrush. If you cannot name a decision you would make differently with competitor data, you are not there yet.
Most small businesses never need the third step, and buy it first.
Common Mistakes to Avoid
- Buying a platform before connecting Search Console. Free, more accurate for your own site, and the most common omission.
- Treating estimates as measurements. Volume and difficulty are models.
- Chasing domain authority. A vendor score, not a ranking factor.
- Confusing plugins with research tools. Yoast controls your tags; Ahrefs researches keywords. You may need both, and they are different purchases.
- Ignoring usage limits. Credits and tracked keywords bind before price does.
- Buying annually before trialling. Both major platforms push annual commitments.
- Following pre-2023 GA advice. Universal Analytics no longer exists.
- Researching without publishing. No tool improves rankings. The work it informs does.
FAQs
What SEO tools do I actually need?
Google Search Console, an analytics tool, and an on-page plugin if you use WordPress — all free. Add affordable keyword research when you publish regularly. Add a full platform only when competitor data changes your decisions.
What is the best free SEO tool?
Google Search Console, decisively. It shows your real queries, positions and click-through rates. Bing Webmaster Tools adds free keyword volume data, and Screaming Frog’s free tier handles technical audits for small sites.
Is Ahrefs or Semrush better?
Ahrefs for backlink data and core SEO depth, Semrush for breadth across PPC, local and content. Both are excellent at keyword research and both are expensive.
Are search volume numbers accurate?
They are estimates, not Google’s actual data, which is why the same keyword shows different figures in each tool. Use them to compare keywords against each other rather than to forecast traffic.
Do I need Yoast if I have Semrush?
Yes, if you use WordPress. They do different jobs — Yoast controls your titles, meta descriptions, canonicals and structured data; Semrush researches keywords and competitors.
Is domain authority a Google ranking factor?
No. Domain Authority and Domain Rating are metrics created by Moz and Ahrefs respectively. Google does not use them. They are rough comparative signals and nothing more.
Key Takeaways
- Connect Search Console before buying anything — it is free and more accurate for your own site.
- Bing Webmaster Tools gives free keyword volume data that most people miss.
- Third-party volume, difficulty and traffic figures are modelled estimates.
- Domain authority is a vendor metric, not a Google ranking factor.
- Buy a full platform only when competitor data would change a decision.
Where to Start
Connect Search Console and Bing Webmaster Tools this week, and run Screaming Frog’s free tier over your site. That costs nothing and will surface more actionable work than a subscription would in the first month.
For the paid decision, see our Semrush vs Ahrefs comparison and Ahrefs alternatives, plus our analytics guide.