Keyword research tool reviews

Honest, hands-on reviews of every tool we cover. Start with the comparison table, then dig into the one that fits you.

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Honest, hands-on reviews of every tool we cover. Start with the comparison table, then dig into the one that fits you.

Keyword research tools compared by best use case, keyword database size, starting price, and our rating.
#ToolBest forKeyword databaseStarts atRatingVisit link
1 Semrush Best overall Agencies & serious marketers 25B+ keywords $139.95/mo 4.8 Try free
2 Ahrefs Best for competitive research Backlinks & competitive research 29B+ keywords $129/mo 4.7 Visit
3 SE Ranking Best value Freelancers & small business 5B+ keywords $65/mo 4.6 Try free
4 Mangools Best for beginners Bloggers & long-tail terms 2.5B+ keywords $29/mo 4.5 Try free
5 Surfer SEO Best for content Writers optimizing to rank SERP-based $99/mo 4.4 Try free
6 Moz Pro Best metrics Trusted difficulty & DA scores 1.25B+ keywords $49/mo 4.3 Try free
7 Serpstat Best budget all-in-one Budget all-in-one suite 9B+ keywords $59/mo 4.2 Try free
8 Keywords Everywhere Best browser add-on Quick on-page volume data Browser add-on From $5/mo 4.1 Try free
9 Ubersuggest Best low-cost starter Low-cost starter ~4B keywords $29/mo 4 Try free
10 Google Keyword Planner Best free (from Google) Free PPC volume data Google’s own data Free 3.9 Visit
11 AnswerThePublic Best for question research Questions & content ideas Autocomplete-based From $11/mo 3.8 Visit

Semrush

4.8/5

Agencies and in-house marketers who want one tool for search-term research, competitor spying, PPC, and content — and won’t outgrow it.

Read the Semrush review →

Ahrefs

4.7/5

SEOs who live in competitor analysis and backlinks, and want the cleanest keyword data and SERP history in the business.

Read the Ahrefs review →

SE Ranking

4.6/5

Freelancers and small businesses who want ~90% of Semrush’s power at roughly half the price.

Read the SE Ranking review →

Mangools

4.5/5

Bloggers, creators, and anyone who wants to find low-competition search terms without a learning curve.

Read the Mangools review →

Surfer SEO

4.4/5

Writers and content teams who’ve found their search terms and now need to turn them into pages that rank.

Read the Surfer SEO review →

Moz Pro

4.3/5

Teams who want trusted, easy-to-read difficulty and authority metrics — and a gentle on-ramp to SEO.

Read the Moz Pro review →

Serpstat

4.2/5

Solo SEOs and small agencies who want keyword research, rank tracking, audits, and competitor data in one suite without a premium price tag.

Read the Serpstat review →

Keywords Everywhere

4.1/5

People who want search volume, CPC, and related terms overlaid directly on Google, YouTube, Amazon, and other sites — without opening a separate dashboard.

Read the Keywords Everywhere review →

Ubersuggest

4/5

Beginners and budget-conscious creators who want straightforward keyword ideas and basic competitor data — with an unusual one-time “lifetime” pricing option.

Read the Ubersuggest review →

Google Keyword Planner

3.9/5

Anyone who wants volume and forecast data straight from Google for free — especially advertisers planning paid campaigns.

Read the Google Keyword Planner review →

AnswerThePublic

3.8/5

Content marketers and creators who want to map the questions, prepositions, and comparisons people search around a topic — a fast way to find article angles and FAQ fodder.

Read the AnswerThePublic review →