Best SEO Tools in 2026
Updated
In short: Ahrefs is ranked #1 of 241 as of 3 October 2026, ahead of Semrush and SpyFu. The best-ranked option with a free plan is Semrush. The lowest first paid tier on this page is DefiniteSEO at $0.42/mo.
SEO work can span keyword discovery, competitor review, site checks, and position monitoring. Compared on keyword research, competitor research, backlink analysis, site audit, and rank tracking, these entries let you line up capabilities with the work you need to do. Tracked keywords and API access add other dimensions to compare; free-plan availability and paid-from pricing help clarify access. Ahrefs heads the ranked entries, followed by Semrush and SpyFu, with Serpstat also among those near the top. Use the ordering as context, then weigh the listed features against your priorities, whether you focus on research, audits, or tracking.
241 seo tools ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
| # | Platform | Score | Why | From | Free plan | Paid from | Keyword research | |
|---|---|---|---|---|---|---|---|---|
| 1 | Ahrefs | 9.0 | RecognisedAPIDocumented | $29/mo | Yes | $29/mo | Yes | View |
| 2 | Semrush | 9.0 | RecognisedAPIDocumented | — | Yes | $117.33/mo | Yes | View |
| 3 | SpyFu | 8.9 | RecognisedAPIDocumented | $29/mo | Yes | $29/mo | Yes | View |
| 4 | Serpstat | 8.8 | RecognisedAPIDocumented | $50/mo | Yes | $50/mo | Yes | View |
| 5 |  Scaleo | 8.8 | RecognisedAPIDocumented | $24/mo | Yes | $24/mo | Yes | View |
| 6 |  Outerank | 8.8 | RecognisedAPIDocumented | $31/mo | Yes | $39/mo | Yes | View |
| 7 |  Nokofy | 8.7 | RecognisedAPIDocumented | Free | Yes | — | Yes | View |
| 8 |  SEM Optimiser | 8.7 | RecognisedAPIDocumented | $4.08/mo | Yes | $49/mo | Yes | View |
| 9 |  Rush Analytics | 8.7 | RecognisedAPIDocumented | $19/mo | No | $19/mo | Yes | View |
| 10 |  Keyword Kick | 8.7 | RecognisedAPIDocumented | $49/mo | Yes | $49/mo | Yes | View |
| 11 |  SEOPress | 8.7 | RecognisedAPIDocumented | $4.08/mo | Yes | — | Yes | View |
| 12 | Raven Tools | 8.7 | RecognisedAPIDocumented | $3.25/mo | Yes | $39/mo | — | View |
| 13 | WooRank | 8.6 | RecognisedAPIDocumented | — | Yes | — | Yes | View |
| 14 |  SignalSumo | 8.6 | RecognisedAPIDocumented | $49/mo | Yes | $49/mo | Yes | View |
| 15 |  RankMeFast | 8.6 | RecognisedAPIDocumented | — | Yes | $49/mo | Yes | View |
| 16 |  Collabim | 8.6 | RecognisedAPIDocumented | Free | Yes | $538/mo | Yes | View |
| 17 | Authoritas SEO Platform | 8.5 | RecognisedAPIDocumented | £99/mo | Yes | — | Yes | View |
| 18 |  Search Scope | 8.5 | RecognisedAPIDocumented | £99/mo | No | — | Yes | View |
| 19 |  Sitebaze | 8.5 | RecognisedAPIDocumented | €19/mo | Yes | — | Yes | View |
| 20 | Marketing Miner | 8.5 | RecognisedAPIDocumented | — | Yes | — | — | View |
| 21 | DefiniteSEO | 8.5 | RecognisedAPIDocumented | $0.42/mo | Yes | $4.99/mo | — | View |
| 22 |  Squirrly SEO | 8.4 | RecognisedAPIDocumented | Free | Yes | — | Yes | View |
| 23 | Mangools | 8.4 | RecognisedAPIDocumented | Free | Yes | — | Yes | View |
| 24 | Seobility | 8.3 | RecognisedAPIDocumented | — | Yes | — | Yes | View |
| 25 | Topvisor | 8.3 | RecognisedAPIDocumented | $29/mo | Yes | $29/mo | — | View |
Is your platform on this list?
Numbered spots on this list can be sponsored. They are labelled, and the editorial order and scores never change for payment.
Questions about this list
Which seo tool is ranked first on Inferse?
Ahrefs is ranked #1 of 241 with a score of 9.0. Semrush is second and SpyFu third.
How many of these have a free plan?
18 of the 25 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, DefiniteSEO has the lowest first paid tier we found: $0.42/mo.
How is this list ranked?
Ranked on what each maker publishes, open and connectable first: a public API, open-source code, the depth of its documentation and a free tier to try it on. Model lists are sorted by the figure in their title, exactly as each provider publishes it. Paid placements never change a rank.