Technology answer

SEMrush

77

companies run it, <0.01% of 54,527,857 in the index. Landing 12 Sept 2026.

Hosts: 143 live hosts run it, of 191,809,695 hosts in the index, <0.01%. A host is a website, not a company.

Companies by month

No published series

77 companies is under the publication floor of 1,000, and the fixed panel anchored at 31 Dec 2020 carries 46 of them. A monthly line drawn off that many observations would be noise at the same weight as a line off millions, so this page states the count and its date and publishes no series.

First discovered 8 Oct 2023, last discovered 10 Sept 2026.

Both denominators, and a third

Shares of the same 77each row a different wholelanding 12 Sept 2026

Denominator

Companies

Share

companies in the index

54,527,857

<0.01%

companies running anything in SEO

8,433,725

<0.01%

companies running anything in All-in-one SEO platforms

53,415

0.14%

Three wholes, three shares of one count: a share travels with its whole, never alone. Against the last of them, SEMrush is rank 7 of 17 technologies in All-in-one SEO platforms.

Open as a segment

77 companies; add a country, a sector or a band on the segment page. Counting is free.

/companies/tech-semrush

Open the segment

Catalogue record

As recorded in the cataloguetaxonomy release tax-2026.10last discovered 10 Sept 2026

SEO and competitive research platform for keyword, backlink, and site analysis.

SEMrush is a SaaS platform for SEO research, rank tracking, site audits, and competitive analysis. It is made by Semrush Inc. and used by marketers and SEO teams to plan and optimize search performance.

Kindproduct

VendorSemrush, semrush.com

PathMarketing and Advertising > SEO > All-in-one SEO platforms

Slugsemrush

Deploymentsaas

Pricingsubscription

Open sourceno

First discovered2023-10-08

Last discovered2026-09-10

Taxonomy releasetax-2026.10

One click under this answer

Subcategory answerAll-in-one SEO platformsCompanies running anything in All-in-one SEO platforms, 53,415 of 54,527,857 in the index, and the technologies ranked in it.Category answerSEOThe category above this one, with its subcategories and the companies in each.CatalogueAll 8,177 technologiesRanked by the companies running them, with the publication gate named and the long tail drawn.