Rankfill

Best Keywords Everywhere Alternatives for Gap Analysis

You're browsing a competitor's site, noticing they're pulling traffic you should be getting. You open Keywords Everywhere, search a few terms, see some volume numbers, and then... what? You have data, but no clear picture of what your competitor ranks for that you don't, or what you should actually build next.

That's the wall Keywords Everywhere users hit. It's a browser extension that shows metrics while you search. It wasn't built for gap analysis — for systematically finding what your site is missing compared to competitors. If that's the work you're trying to do, you need different tools.

Here's an honest look at what actually works for gap analysis, and how to think about the right approach for your situation.

What Gap Analysis Actually Requires

Before comparing tools, it helps to be precise about what gap analysis involves. You're trying to answer: Which keywords are my competitors ranking for that I'm not targeting?

That requires three capabilities:

  1. Crawling competitor domains to extract their full keyword footprint
  2. Comparing that footprint against your own indexed keywords
  3. Prioritizing the gaps by volume, difficulty, and relevance

Keywords Everywhere touches none of those three. It shows you data about a keyword you've already found. It doesn't discover what you're missing. If you want the full picture of why this matters, the Keywords Everywhere review breaks down exactly where the tool draws its limits.

The Tools That Actually Do Gap Analysis

Ahrefs — Best for Deep Competitor Analysis

Ahrefs is the standard for serious gap analysis. Its Content Gap tool lets you input multiple competitor domains and returns every keyword they rank for that your site doesn't.

What it does well:

What it costs: Plans start at $129/month. There's no meaningful free tier for gap analysis — the free account limits you so severely it's not worth factoring in.

Best for: Established sites doing ongoing competitive research where you'll use the tool weekly.

Semrush — Best for Keyword Gap + Intent Layering

Semrush's Keyword Gap tool is comparable to Ahrefs but with some differences in how it surfaces intent data. You can compare up to five domains simultaneously and filter by match type (keywords where you're missing vs. where competitors outrank you).

What it does well:

What it costs: Plans start at $139.95/month. The free trial gives you limited daily searches but is functional enough to run a few gap reports before committing.

Best for: Teams that also want rank tracking, site auditing, and gap analysis in one platform.

Moz Pro — Lighter Alternative with Decent Gap Reporting

Moz's True Competitor and Keyword Explorer tools do basic gap analysis, though with a shallower database than Ahrefs or Semrush. The interface is friendlier if you're newer to SEO.

What it does well:

What it costs: Plans start at $99/month with a 30-day free trial.

Best for: Smaller sites or newer SEOs who find Ahrefs overwhelming and don't need the deepest data available.

Ubersuggest — Budget Option for Light Gap Analysis

Neil Patel's Ubersuggest has a Competitor Analysis feature that gives a surface-level view of what competitors rank for. The database is smaller than the big three, so you'll miss keywords in thinner niches, but it works well enough for common commercial terms.

What it costs: Lifetime plans exist starting around $120 one-time, which makes it attractive if you don't want a recurring subscription.

Best for: Bloggers or small businesses who need occasional gap data without a monthly commitment.

SpyFu — Best for Paid + Organic Gap Analysis Together

If your site runs PPC alongside SEO, SpyFu is worth considering. It shows you both organic and paid keyword gaps, so you can see what competitors bid on in Google Ads and what they rank for organically.

What it costs: Plans start at $39/month, making it one of the more affordable full-featured options.

Best for: E-commerce and service businesses where paid and organic strategy overlap.

How to Run a Gap Analysis Without an Expensive Subscription

If you're not ready to commit to a $130+/month tool, there's a scrappier approach:

  1. Google Search Console (free): Export your site's current ranking keywords. This is your baseline.
  2. Manually search competitor URLs in a free Ahrefs or Semrush trial: Run gap reports during the trial window and export everything to a spreadsheet.
  3. Google autocomplete and "People also ask": Surface questions your competitors are answering that you haven't addressed.
  4. SimilarWeb free tier: Gets you a rough traffic distribution for competitors, hinting at which content categories matter most.

This approach is time-intensive and not repeatable at scale, but it works for a one-time audit.

When you do find gap keywords, search volume prioritization becomes the next question — not every gap is worth filling. A keyword you're missing but that drives 20 searches a month is a different decision than one driving 2,000.

What to Actually Do With Gap Data

Finding gaps is half the work. The other half is understanding why you're not ranking for those keywords — whether it's that you have no content on the topic, your existing content is weak, or you simply don't have the authority yet.

If you have domain authority but thin content coverage, that's the most solvable gap. You're not ranking because you haven't published. If you've published but still aren't ranking, that's a different problem — the reasons organic keywords aren't ranking often come down to content quality, internal linking, or search intent mismatch.

Once you've identified which gaps to fill, you need an execution plan — what to publish, in what order, targeting which intent. For sites that want that work done rather than just mapped, Rankfill identifies competitor keyword gaps and delivers a prioritized content plan alongside ready-to-publish articles.

For tracking results after you publish, having a reliable way to monitor movement matters — keyword reporting tells you whether the content you built is actually closing the gaps you identified.

FAQ

Is Keywords Everywhere useful at all for gap analysis? Not really. It shows metrics on keywords you find yourself. It has no competitor domain analysis, no content gap report, and no way to systematically discover what you're missing. It's a research aid, not a gap analysis tool.

Which tool has the most accurate keyword data? Ahrefs and Semrush are generally considered most accurate for organic keyword data. Both pull from massive crawl indexes. Ubersuggest and Moz work from smaller databases and will miss keywords in competitive niches.

Can I do gap analysis for free? You can get partial data for free using trial periods from Ahrefs or Semrush combined with Google Search Console exports. It won't be as thorough or repeatable as a paid plan, but it's workable for a one-time audit.

How often should I run a gap analysis? Quarterly is a reasonable cadence for most sites. Competitors publish new content continuously, so gaps shift. Running it more often than quarterly rarely yields enough new data to justify the time.

What's the difference between a content gap and a keyword gap? Keyword gap = specific terms your competitors rank for that you don't. Content gap = topic areas your competitors cover that you don't address at all. Keyword gaps are a subset of content gaps. Most tools report keyword gaps; content gaps often require manual review of competitor site structure.

Does fixing content gaps actually move traffic? Yes, when the gaps represent topics with real search demand and your content is genuinely good. Understanding what search volume means and how to interpret it helps set realistic expectations before you invest in building the content.