SingleTab Browser logo

Best Chrome Extensions for Marketers

Marketing work happens across a dozen browser tools, and the right extensions collapse the research half of that into the page you are already on.

How we picked

  • • Data available inside daily workflows
  • • Exports for reporting
  • • Reasonable per-seat pricing
  • • Does not require engineering help

At a glance

#ExtensionBest forRatingUsersPricing
1Keywords EverywhereSEOs and content marketers who want keyword volume without opening a separate tool.4.51M+
Paid
2Detailed SEO ExtensionSEOs auditing individual pages quickly during content reviews.4.9600K+
Free
3WappalyzerDevelopers, agencies and sales teams researching what a site is built with.4.63M+
Freemium
4BufferSocial media managers scheduling content while browsing sources.4.7200K+
Freemium
5GrammarlyProfessionals and students who write daily in the browser and want a safety net before hitting send.4.536M+
Freemium

Ratings and install counts are synced daily from each extension's Chrome Web Store listing.

  1. Keywords Everywhere Chrome extension logo

    1. Keywords Everywhere

    Keyword volume, CPC and competition data inside search results.

    Best for: SEOs and content marketers who want keyword volume without opening a separate tool.

    4.5~1M+ users
    Paid
    View ExtensionAlternativesStore
  2. Detailed SEO Extension Chrome extension logo

    2. Detailed SEO Extension

    One-click on-page SEO audit for any URL.

    Best for: SEOs auditing individual pages quickly during content reviews.

    4.9~600K+ users
    Free
    View ExtensionAlternativesStore
  3. Wappalyzer Chrome extension logo

    3. Wappalyzer

    Identifies the technology stack behind any website.

    Best for: Developers, agencies and sales teams researching what a site is built with.

    4.6~3M+ users
    Freemium
    View ExtensionAlternativesStore
  4. Buffer Chrome extension logo

    4. Buffer

    Queue social posts from any page.

    Best for: Social media managers scheduling content while browsing sources.

    4.7~200K+ users
    Freemium
    View ExtensionAlternativesStore
  5. Grammarly Chrome extension logo

    5. Grammarly

    Grammar, spelling and tone suggestions everywhere you write.

    Best for: Professionals and students who write daily in the browser and want a safety net before hitting send.

    4.5~36M+ users
    Freemium
    View ExtensionAlternativesStore

What to know before choosing

Keyword and SERP data is the foundation: seeing volume and competitiveness while reading a competitor's article is what turns browsing into a content plan. Pair it with technology detection to understand a competitor's stack — the CMS, analytics and paid tools a site runs reveal a surprising amount about how the team operates and where the budget goes.

The execution half needs two things: something to schedule what you publish, and something to catch the errors that undermine credibility in public copy. Both are cheap, and both remove a review step from every piece of work.

Compare the shortlist head-to-head

Narrowed it to two? These side-by-side comparisons settle it with a feature table and a verdict.

Grammarly vs LanguageToolThe market leader against the open-source challenger with self-hosting and stronger multilingual support.Grammarly vs WordtuneCorrectness-first editing versus rewriting and tone control for the same sentence.Detailed SEO vs MozBarA fast technical on-page inspector against link metrics and SERP overlays.Keywords Everywhere vs Ahrefs SEO ToolbarCredit-based keyword volumes everywhere versus toolbar metrics tied to an Ahrefs plan.Wappalyzer vs JSON FormatterStack detection for recon work against readable API responses in the browser.Mailtrack vs BufferKnow when an email is read, or schedule what you publish — outreach from two angles.All comparisonsThe full compare hub, grouped by category.

Alternatives to the top picks

Keywords Everywhere alternativesClosest replacements for Keywords Everywhere, ranked by fit.Detailed SEO Extension alternativesClosest replacements for Detailed SEO Extension, ranked by fit.Wappalyzer alternativesClosest replacements for Wappalyzer, ranked by fit.Buffer alternativesClosest replacements for Buffer, ranked by fit.Grammarly alternativesClosest replacements for Grammarly, ranked by fit.

Frequently asked questions

Which extensions help with competitor research?

Keyword overlays for demand, on-page auditors for content structure, and technology detection for the stack behind the site.

Can I schedule social posts from an extension?

Yes — scheduling extensions queue a post to connected channels from any page you are reading.

Are keyword volume extensions worth paying for?

For content teams publishing weekly, credit-based keyword data is much cheaper than a full SEO suite.