Alternatives · Keyword Research
SERP Gap Analyzer alternatives
As of Oct 24, 2026, the best SERP Gap Analyzer alternative for most people is KeySearch (2.2 GPA), second in our ranking of keyword research tools. The best free one is KeywordClustering.net (2.6 GPA). The catch, in its listing's words: "Free for any Keywords Everywhere user: up to 10,000 keywords per job."
SERP Gap Analyzer compared with 6 alternatives: Keyword Chef, KeySearch, Semrush, Ahrefs, KeywordClustering.net and 1 more.
SERP Gap Analyzer is a paid product with a free trial, starting at $99 per month. 3 of the 6 alternatives are free or have a free plan. 2 more offer a free trial.
Listings checked up to Oct 23, 2026 · Where the facts come from
At a glance
| Tool | Price | Free plan | Runs on |
|---|---|---|---|
| SERP Gap AnalyzerThis tool | Free trial · from $99/mo | Trial only | Web |
| Keyword Chef | Free trial · from $29/mo | Trial only | Web |
| KeySearch | Free trial · from $20/mo | Trial only | Web |
| Semrush | Free plan · from $117.33/mo | Yes | Web |
| Ahrefs | Free plan · from $29/mo | Yes | Web, Browser extension |
| KeywordClustering.net | Free | Free | Web |
| Topical Map AI | From $56/mo | No | Web |
Price against what you get
SERP Gap Analyzer starts at $99 a month and scores 2.3 out of 4 on features, ease of use and platforms. 1 of the 4 alternatives on this chart scores higher and starts lower: Topical Map AI.
Keyword Chef, KeySearch and KeywordClustering.net start lower without scoring higher.
Features, ease of use and platforms, averaged
What paid plans start at, a month (each step along is roughly double) →
- The best score at each price
- Has a free plan
- No free plan
How each one differs from SERP Gap Analyzer
Keyword Chef
Credit-based long-tail keyword finder for bloggers and niche sites
- Keyword Chef starts at $29 per month for 5,000 credits, or $20 once for 1,200 credits.
- Keyword Chef can be bought with a one-time purchase.
- Keyword Chef does not cover long-form writing, AI search visibility and content optimization, which SERP Gap Analyzer does.
Suits: Bloggers and niche site builders looking for low-competition topics
KeySearch
Low-cost keyword research tool with rank tracking and site audits
- KeySearch starts at $20 per month, billed annually ($24 billed monthly).
- KeySearch also covers rank tracking, site audit, backlink analysis and youTube SEO.
- KeySearch does not cover long-form writing and AI search visibility, which SERP Gap Analyzer does.
Suits: Bloggers and niche site owners on a small budget
Semrush
SEO suite for keyword research, rank tracking and AI search visibility
- Semrush starts at $117.33 per month, billed annually ($139 billed monthly).
- Semrush has a free plan, which SERP Gap Analyzer lacks.
- Semrush also covers reports, rank tracking, site audit and backlink analysis.
- Semrush does not cover long-form writing, AI search visibility and content optimization, which SERP Gap Analyzer does.
Suits: Freelancers and in-house marketers who want research, tracking and audits in one account
Ahrefs
SEO toolset for backlinks, keyword research, audits and rank tracking
- Ahrefs starts at $29 per month, billed monthly.
- Ahrefs has a free plan, which SERP Gap Analyzer lacks.
- Ahrefs also lists a browser extension.
- Ahrefs also covers rank tracking, site audit and backlink analysis.
- Ahrefs does not cover long-form writing, AI search visibility and content optimization, which SERP Gap Analyzer does.
Suits: SEOs who spend most of their time on backlinks and competitor research
KeywordClustering.net
Free AI keyword clustering for Keywords Everywhere users
- KeywordClustering.net is free.
- KeywordClustering.net has a free plan, which SERP Gap Analyzer lacks.
- KeywordClustering.net does not cover long-form writing, AI search visibility and content optimization, which SERP Gap Analyzer does.
Suits: Keywords Everywhere users who need to group a keyword export into pages
Topical Map AI
AI topical map generator that clusters keywords into a content plan
- Topical Map AI starts at $56 per month for 25 credits, billed monthly.
- Topical Map AI does not cover long-form writing, AI search visibility and content optimization, which SERP Gap Analyzer does.
Suits: Bloggers and niche-site owners planning a whole site's content at once
Limits worth knowing in SERP Gap Analyzer
- Sold through the Semrush App Center, so it needs a Semrush account; the maker's own site sends trial sign-ups there.
- Basic allows 10 analysis reports a month with 6 suggested keywords each; Premium raises that to 30 reports and 12 keywords for $50 more.
- Each report can take up to 15 minutes, and a scanned domain cannot be deleted, only archived.
- TopicRanker's own pricing cards show tighter limits than the Semrush listing, such as 1 domain and 3 reports a month on Basic.
Common questions
What are the alternatives to SERP Gap Analyzer?
The alternatives to SERP Gap Analyzer in this directory are Keyword Chef, KeySearch, Semrush, Ahrefs, KeywordClustering.net and Topical Map AI. Each one has a side-by-side comparison with SERP Gap Analyzer.
Is there a free alternative to SERP Gap Analyzer?
Yes. KeywordClustering.net is free to use. Semrush and Ahrefs have a free plan alongside paid ones.
When were these prices checked?
Each listing shows its own date. On this page they run from Oct 17, 2026 to Oct 23, 2026. Vendors change prices without notice, so confirm on their site before you buy.