Is Amplitude Experiment or Optimizely more popular?

Optimizely is used by more websites in our catalog: 135 use Amplitude Experiment and 1,701 use Optimizely.

Does Amplitude Experiment or Optimizely have higher-authority sites?

Amplitude Experiment sites have the higher median Ahrefs Domain Rating (Amplitude Experiment: 67, Optimizely: 54).

Is Amplitude Experiment or Optimizely growing faster?

Between 2026-06 and 2026-07, Amplitude Experiment went from 0.02% to 0.02% of all tracked sites, while Optimizely went from 0.21% to 0.19%. Amplitude Experiment is gaining ground faster in our index.

How many sites use both Amplitude Experiment and Optimizely?

1 websites in our catalog use both Amplitude Experiment and Optimizely.

Where does this Amplitude Experiment vs Optimizely data come from?

Adoption is counted from Site Stats Database's own crawl; Domain Rating comes from Ahrefs and traffic from DataForSEO. Figures reflect the sites we track and refresh at least monthly.

Amplitude Experiment vs Optimizely — Site Stats Database

Amplitude Experiment vs Optimizely

A side-by-side comparison of two a/b testing & experimentation tools, based on the 21,296 A/B Testing sites tracked by Site Stats Database.

Last updated July 1, 2026

Metric	Amplitude Experiment	Optimizely
Websites	135	1,701
Market share	0.63%	8.0%
Share of top 10K sites	0.12%	1.6%

Share of top 100K sites	0.06%	0.55%

Rank	#18	#5

Median DR	67	54

Average DR	62	48

Median keywords	4,066	1,631

Median referring domains	2,805	1,150

Median domain age	15 yrs	21 yrs

Average domain age	16 yrs	20 yrs

Average monthly traffic	1,136,803	1,268,707

Combined monthly traffic	153,468,403	2,158,071,304

foxsports.com
LanguageEnglish
DR (Ahrefs)84
Total Keywords1,959,858
Referring Domains84,333
Domain Age27 yrs
Traffic (Jun 2026)103,702,948
Traffic Trend
TechnologyAmplitude Experiment
bswhealth.com
LanguageEnglish
DR (Ahrefs)77
Total Keywords257,755
Referring Domains10,172
Domain Age13 yrs
Traffic (Jun 2026)5,840,351
Traffic Trend
Technology
fanduel.com
LanguageEnglish
DR (Ahrefs)82
Total Keywords241,897
Referring Domains25,892
Domain Age17 yrs
Traffic (Jun 2026)5,601,903
Traffic Trend
TechnologyAmplitude Experiment
culvers.com
LanguageEnglish
DR (Ahrefs)74
Total Keywords85,811
Referring Domains8,828
Domain Age29 yrs
Traffic (Jun 2026)5,046,954
Traffic Trend
TechnologyAmplitude Experiment
complex.com
LanguageEnglish
DR (Ahrefs)86
Total Keywords744,117
Referring Domains125,517
Domain Age29 yrs
Traffic (Jun 2026)4,846,407
Traffic Trend
TechnologyAmplitude Experiment
roomstogo.com
LanguageEnglish
DR (Ahrefs)67
Total Keywords234,292
Referring Domains12,234
Domain Age29 yrs
Traffic (Jun 2026)3,751,434
Traffic Trend
Technology
empower.com
LanguageEnglish
DR (Ahrefs)78
Total Keywords131,397
Referring Domains11,896
Domain Age31 yrs
Traffic (Jun 2026)3,322,596
Traffic Trend
TechnologyAmplitude Experiment
oportun.com
LanguageEnglish
DR (Ahrefs)65
Total Keywords26,191
Referring Domains4,935
Domain Age25 yrs
Traffic (Jun 2026)2,705,070
Traffic Trend
TechnologyAmplitude Experiment
bodi.com
LanguageEnglish
DR (Ahrefs)77
Total Keywords92,317
Referring Domains9,027
Domain Age29 yrs
Traffic (Jun 2026)1,625,789
Traffic Trend
TechnologyAmplitude Experiment
huckleberrycare.com
LanguageEnglish
DR (Ahrefs)60
Total Keywords52,885
Referring Domains1,953
Domain Age7 yrs
Traffic (Jun 2026)1,443,920
Traffic Trend
Technology

Website	Language	DR (Ahrefs)	Total Keywords	Referring Domains	Domain Age	Traffic (Jun 2026)	Traffic Trend	Technology
foxsports.com	English	84	1,959,858	84,333	27 yrs	103,702,948		Amplitude Experiment

clevelandclinic.org
LanguageEnglish
DR (Ahrefs)92
Total Keywords5,266,698
Referring Domains262,751
Domain Age28 yrs
Traffic (Jun 2026)536,244,433
Traffic Trend
TechnologyOptimizely
bbc.com
LanguageEnglish
DR (Ahrefs)93
Total Keywords3,887,532
Referring Domains716,813
Domain Age36 yrs
Traffic (Jun 2026)145,867,646
Traffic Trend
TechnologyOptimizely
cnn.com
LanguageEnglish
DR (Ahrefs)93
Total Keywords3,578,724
Referring Domains1,035,782
Domain Age32 yrs
Traffic (Jun 2026)110,708,925
Traffic Trend
TechnologyOptimizely
starbucks.com
LanguageEnglish
DR (Ahrefs)89
Total Keywords319,049
Referring Domains100,499
Domain Age32 yrs
Traffic (Jun 2026)39,976,207
Traffic Trend
Technology
cinemark.com
LanguageEnglish
DR (Ahrefs)76
Total Keywords271,185
Referring Domains12,909
Domain Age30 yrs
Traffic (Jun 2026)33,417,105
Traffic Trend
Technology
heart.org
LanguageEnglish
DR (Ahrefs)91
Total Keywords559,706
Referring Domains159,503
Domain Age31 yrs
Traffic (Jun 2026)29,746,075
Traffic Trend
TechnologyOptimizely
michaels.com
LanguageEnglish
DR (Ahrefs)83
Total Keywords1,192,309
Referring Domains71,560
Domain Age31 yrs
Traffic (Jun 2026)27,717,581
Traffic Trend
Technology
oanda.com
LanguageEnglish
DR (Ahrefs)84
Total Keywords98,144
Referring Domains28,934
Domain Age29 yrs
Traffic (Jun 2026)23,705,563
Traffic Trend
TechnologyOptimizely
petsmart.com
LanguageEnglish
DR (Ahrefs)80
Total Keywords528,037
Referring Domains20,803
Domain Age30 yrs
Traffic (Jun 2026)22,276,272
Traffic Trend
Technology
peacocktv.com
LanguageEnglish
DR (Ahrefs)82
Total Keywords358,336
Referring Domains34,509
Domain Age13 yrs
Traffic (Jun 2026)20,788,718
Traffic Trend
Technology