Best Free Keyword Research Software for Agency
We narrowed 583 tracked tools down to 3 keyword research picks that fit this scenario, priced from $12 to $99/mo, with 3 offering a free plan.
Editor's Strategic Vetted Verdict
We compared the 3 keyword research tools that passed the filters on this page. Ahrefs is our top pick — it has a genuinely usable free tier, earns a 4.3/5 editor score, and its site explorer (backlink & traffic analysis) is what pushed it ahead. If that is more than you need, DomainScope has a genuinely usable free tier and covers the basics well with its real-time rank tracking & position indexing.
We track 583 marketing tools in our index, and 3 of them fit keyword research for agencies, a zero budget. Paid entry ranges from $12 to $99/mo. 3 tools run a free plan, so you can pilot the workflow before paying. You will find cloud, api, desktop options in this list. For agencies, client reporting, multi-workspace management, and white-label options carried the most weight.
Keyword Research Tools at a Glance
| # | Tool | Editor Score | Starting Price | Free Option |
|---|---|---|---|---|
| 1 | Ahrefs | 4.3/5 | $99/mo | Free plan |
| 2 | DomainScope | 4.3/5 | $12/mo | Free plan |
| 3 | Rankscope | 4/5 | Free | Free plan |
Ahrefs
An all-in-one SEO toolset designed for growing search traffic and optimizing websites.
DomainScope
A next-generation platform for keyword research optimized for high-velocity marketing pipelines.
Rankscope
A next-generation platform for keyword research optimized for high-velocity marketing pipelines.
Our Vetting Methodology & E-E-A-T Standards
Verified by the MKTBee Editorial Board
To assemble these Keyword Research software recommendations, our editorial board conducts rigorous practitioner vetting. We buy active accounts, mock real-world MarTech pipelines, test API throughput, and cross-examine user experiences against verified reviewer directories.
We do not accept placement sponsorships. Our editorial rating score is deterministic, derived by assessing starting pricing models, feature availability (like data extraction limits, workflow nodes, or user access seats), deployment type, and vendor response SLA benchmarks.
Vetted Scenario Insights (FAQ)
QWhat is the best Keyword Research tool for agency right now?
We rank Ahrefs first here (4.3/5). Has a genuinely usable free tier, and it leads on site explorer (backlink & traffic analysis). DomainScope is the runner-up if you want a lighter or cheaper option.
QAre there free keyword research options for agency?
Yes — 3 of the 3 tools here run a free plan: Ahrefs, DomainScope, Rankscope. Free tiers usually cap seats, projects, or monthly volume, so treat them as a way to pilot the workflow rather than a permanent setup.
QHow do we score these tools?
Our editor score is built from the same signals for every tool: starting price and pricing model, feature depth, deployment options, integrations, and documented support levels. We do not take paid placements, so ranking order is not for sale.