Keyword Research Tools
Keyword research tools with a one-time purchase
4 of the 52 keyword research tools in this directory can be bought with a one-time purchase.
1 of them is free or has a free plan.
Listings checked up to Oct 23, 2026 · Where the facts come from
| Tool | Price | Free plan | Runs on |
|---|---|---|---|
| Keyword ChefCredit-based long-tail keyword finder for bloggers and niche sites | Free trial · from $29/mo | Trial only | Web |
| Keyword Tool DominatorLive autocomplete keywords from Amazon, Google, YouTube and five more | Free plan · from $9 one-time | Yes | Web, Browser extension |
| Publisher RocketAmazon keyword, category and ad research for book authors | From $199 one-time | No | macOS, Windows |
| KDSPYBrowser extension for Amazon book category and keyword research | From $79 one-time | No | Browser extension |
Common questions
Which keyword research tools can be bought once instead of by subscription?
4 of the 52 keyword research tools in this directory can be bought with a one-time purchase. They are Keyword Chef, Keyword Tool Dominator, Publisher Rocket and KDSPY.
Which of these keyword research tools are free?
Keyword Tool Dominator is free or has a free plan.
When was this checked?
Every listing on this page was checked on Oct 23, 2026, against the pages it cites. Vendors change prices and plans without notice, so confirm on their site before you buy.
This page is built from the listings. A tool is here because its listing says so, and each listing names the pages it was read from.