Keyword research database

The tool holds a searchable database of keywords with data such as monthly search volume and ranking difficulty, so you can find terms worth targeting.

What it is

Keyword research tools hold a large database of search terms with figures attached, such as an estimate of monthly searches, how hard it is to rank, and related phrases and questions. You enter a topic and get ideas, then filter by volume, difficulty or intent. For example, a bookkeeping firm can discover that people search for a particular tax deadline thousands of times a month and decide to write a guide on it. Ahrefs, SEMrush and SurferSEO are listed as having it.

Why it matters

Without data, content planning relies on guesses about what people type. Keyword research shows demand and competition before you invest in writing, and it reveals the wording customers actually use. It matters for any business that wants search traffic. It matters less if your leads come from direct outreach or referrals. Volumes are estimates and differ between tools, so use them to compare topics with each other, not as exact numbers.

What to check

  • Which countries and languages does the database cover.
  • What does it show beyond volume, such as difficulty, intent and trends.
  • Can you group keywords into topics and save lists.
  • How many searches or exports does your plan allow each day or month.

Tools with Keyword research database

  • SurferSEO logo
    ToolClient acquisition
    Optimise your content in real time with recommendations based on top-ranking search results.

    SEO

    From €49/mo yearlyAffiliate link
  • Ahrefs logo
    ToolClient acquisition
    Combines backlink analysis, keyword research, rank tracking and technical audits built on an extensive web index.

    SEO

    From €27/moFree plan
  • SEMrush logo
    ToolClient acquisition
    Unify keyword research, backlink analysis, technical audits and rank tracking in one dashboard.

    SEO

    From €112.52/mo yearlyFree planAffiliate link

In SEO ranking order; the number is each tool's place. Some of this is collected from public sources and not yet checked by us.

SEO tools without keyword research database

  • Clearscope logo
    ToolClient acquisition
    Grades content on keyword and topic coverage ranked by Google, using AI analysis of competing top-ranking pages.

    SEO

    From $129/mo