How many companies use Google Tag Manager vs Optimizely?

2,624,626 companies use Google Tag Manager and 5,949 companies use Optimizely in our database. Google Tag Manager is more widely adopted with 441.2x more companies than Optimizely.

Can I get a list of companies using both Google Tag Manager and Optimizely?

Yes. AgentData tracks companies using both tools. Sign up free to access the full list with emails, tech stacks, and contacts via CSV or API.

Google Tag Manager vs Optimizely

Google Tag Manager is used by 2,624,626companies — 441.2x more than Optimizely (5,949).

2,624,626 use Google Tag Manager5,949 use Optimizely

Side-by-side comparison

	Google Tag Manager	Optimizely
Companies	2,624,626	5,949
Category	Other	Other

Company adoption

Top companies using Google Tag Manager

奈良市の髪質改善美容室Dears(ディアーズdears-nara.com

afb DEafb-group.de

Bayern Tourist GmbHbtg-service.de

Imperial College Londonimperial.ac.uk

Mentor Gymmentorgym.fi

Top companies using Optimizely

Martial Arts and Yogaearlsfieldmartialartsandyoga.com

Express Oil Change & Tire Engineersexpressoil.com

ScienceLogicsciencelogic.com

Unisysunisys.com

Huntresshuntresslabs.com

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2,630,575 companies with emails, tech stacks, and contacts

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API access

GET /api/v1/tech?name=google-tag-manager

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