Keyword Research Tools 2026

I've tested every keyword research tool worth mentioning over the past seven years. Some I've used daily, others I've trialled and moved on from. This guide ranks them based on data quality, ease of use, and value for money — not who pays the highest affiliate commission. Whether you're spending $17/mo or $140/mo, there's a right tool for your situation.

SemrushAhrefsMangoolsKeySear.LowFrui.SerpstatUbersug.WriterZ. Keywords Backlinks Rank Track Site Audit Content Competitor Local SEO Reporting
Feature availability across tools (green = included)
KeySearch $17 WriterZen $27 Ubersuggest $29 LowFruits $29.9 Mangools $49 Serpstat $59 Ahrefs $129 Semrush $139.95
Starting monthly price (lowest plan)

Semrush

The industry-standard all-in-one SEO platform

4.7/5

From $139.95/mo Free trial

Agencies and serious marketers who need everything in one platform and can justify the investment

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Ahrefs

The backlink king with the largest link index on the planet

4.7/5

From $129/mo

SEO professionals who live in backlink analysis and want the cleanest, deepest link data available

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Mangools

Beautiful keyword research tools that don't need a manual

4.5/5

From $49/mo Free trial

Bloggers, niche site builders, and freelancers who want keyword research without the Semrush price tag

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KeySearch

No-frills keyword research for bloggers on a budget

4.1/5

From $17/mo

New bloggers and niche site builders spending less than $20/mo on SEO tools

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LowFruits

Find low-competition keywords that forums and weak sites rank for

4.3/5

From $29.9/mo

New site owners hunting for low-competition keywords they can actually rank for immediately

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Serpstat

Growth hacking SEO platform with strong competitor analysis

4.2/5

From $59/mo Free trial Free plan

Budget-conscious SEOs who want all-in-one features without the Semrush price tag

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Ubersuggest

Neil Patel's freemium SEO tool for beginners and small businesses

3.8/5

From $29/mo Free trial Free plan

Complete beginners who want to learn SEO with guided tutorials and a simple interface

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WriterZen

AI-powered content workflow from keyword research to finished article

4.1/5

From $27/mo Free trial

Content creators who want an end-to-end workflow from keyword research to AI-assisted draft

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Head-to-Head Comparisons