Stack Lookup
Get a free key

Category answer

SEO

8,433,725

companies run at least one of the 40 technologies in it, 15.5% of 54,527,857 in the index. Landing 12 Sept 2026.

SEO tools, plugins and structured-data services.

The subcategories

Companies running any technology in eachof 8,433,725 in SEOlanding 12 Sept 2026

A company running technologies in two subcategories is counted in both, so the shares do not sum to 100%

The 8 subcategories in this chart
SubcategoryCompaniesShare of the category
SEO plugins and apps8,284,62198.2%
Website translation and localization278,7893.3%
All-in-one SEO platforms53,4150.63%
SEO content optimization tools1,5090.02%
Local SEO platforms1,3840.02%
Structured data SEO tools690<0.01%
Local listings management202<0.01%
SEO audit and crawlers8no share

The technologies ranked in SEO

Companiesof 8,433,725 with any of themlanding 12 Sept 2026

#
Technology
Vendor
Companies
Share
1
Yoast BV
5,694,145
67.5%
2
Rank Math
1,380,891
16.4%
3
AIOSEO (Awesome Motive)
1,170,020
13.9%
4
AIOSEO (Awesome Motive)
1,001,497
11.9%
5
Yoast BV
324,803
3.9%
6
The SEO Framework
53,803
0.64%
7
Ahrefs Pte. Ltd.
40,942
0.49%
8
eLightUp
24,207
0.29%
9
Faber Company, Inc.
8,796
0.10%
10
Yoast BV
2,717
0.03%
11
Alli AI, Inc.
2,019
0.02%
12
Frase
1,509
0.02%
13
NowFloats Technologies
1,371
0.02%
14
BrightEdge
1,139
0.01%
15
Linguise
996
0.01%
16
Schema App
546
<0.01%
17
SiteBooster
184
<0.01%
18
SEOPress
183
<0.01%
19
WP SEO AI
173
<0.01%
20
Submit Express, Inc.
161
<0.01%
21
WordLift srl
145
<0.01%
22
Attracta
93
<0.01%
23
Semrush Inc.
77
<0.01%
24
Linguana
63
<0.01%

24 of 40 technologiesa company running two of them is counted in both, so the shares do not sum to 100%under 20 companies no share is published

The 14 more technologies in SEO, ranked
TechnologyVendorCompanies
NexMindNexMind47
Whitespark SEOWhitespark40
QuicksproutQuicksprout38
HuckabuyHuckabuy28
BrightLocalBrightLocal27
KleecksKleecks25
Web CEOWebCEO24
SynupSynup18
RioSEORio SEO13
Auto HQAuto HQ11
SpotzerSpotzer Digital5
AtomseoAtomseo5
SEOmatorSEOmator3
Realist1

2 of the 10 most detected technologies here sit under the publication gate on detector quality of 0.90, so they are listed rather than ranked: GTranslate 277,735, SEOmatic 11,913.

One click under this answer

Technology answerYoast SEOThe first row of this ranking, with its companies by month since January 2021.
Domain of the taxonomy

Marketing and Advertising

The top of the tree. 40 technologies sit under this category.

CatalogueEvery technology, rankedFiltered to this category with ?category=seo.