Home / Market share / A/B testing & personalization
A/B testing and personalization market share, 2026
VWO leads the A/B testing tools we track: it's on 24% of the 82,408 websites that run any of them. Google Optimize is second with 20%.
| # | Tool | Websites | Share | ||
|---|---|---|---|---|---|
| 1 | VWO | 20,109 | 24% | Alternatives | |
| 2 | Google Optimize | 16,167 | 20% | Alternatives | |
| 3 | Optimizely | 15,603 | 19% | Alternatives | |
| 4 | Zoho PageSense | 6,963 | 8% | Alternatives | |
| 5 | Intellimize (Webflow Optimize) | 4,552 | 6% | Alternatives | |
| 6 | Convert | 4,210 | 5% | Alternatives | |
| 7 | Insider | 2,745 | 3% | Alternatives | |
| 8 | AB Tasty | 2,494 | 3% | Alternatives | |
| 9 | Salesforce Personalization (Evergage) | 1,927 | 2% | Alternatives | |
| 10 | Nelio A/B Testing | 1,797 | 2% | Alternatives | |
| 11 | Kameleoon | 1,609 | 2% | Alternatives | |
| 12 | Visually | 1,281 | 2% | Alternatives | |
| 13 | Bloomreach Engagement (Exponea) | 1,044 | 1% | Alternatives | |
| 14 | Mida | 886 | 1% | Alternatives | |
| 15 | Statsig | 876 | 1% | Alternatives | |
| 16 | GrowthBook | 739 | 0.9% | Alternatives | |
| 17 | Omniconvert | 655 | 0.8% | Alternatives | |
| 18 | Adobe Target | 308 | 0.4% | Alternatives | |
| 19 | BlueConic | 249 | 0.3% | Alternatives | |
| 20 | LaunchDarkly | 124 | 0.2% | Alternatives | |
| 21 | Personyze | 68 | 0.1% | Alternatives | |
| 22 | RightMessage | 56 | 0.1% | Alternatives | |
| 23 | Split | 25 | 0.0% | Alternatives | |
| 24 | Evolv AI | 10 | 0.0% | Alternatives | |
| 25 | SiteSpect | 5 | 0.0% | Alternatives | |
| 26 | Qubit | 4 | 0.0% | ||
| 27 | Flagsmith | 4 | 0.0% | ||
| 28 | Eppo | 3 | 0.0% |
Share: of the websites running any of these tools. From the homepage code of the 35,687,212 sites in StackGrep's latest crawl.
The leader in each country
| Domain | Most used | Websites | |
|---|---|---|---|
| .comon .com | VWO | 11,522 | 24% of installs |
| .dein Germany | VWO | 383 | 24% of installs |
| .orgon .org | Optimizely | 1,407 | 41% of installs |
| .ruon .ru | Google Optimize | 497 | 82% of installs |
| .ukin the UK | VWO | 754 | 31% of installs |
| .neton .net | Optimizely | 533 | 22% of installs |
| .frin France | AB Tasty | 184 | 21% of installs |
| .nlin the Netherlands | VWO | 872 | 40% of installs |
| .jpin Japan | Google Optimize | 329 | 40% of installs |
| .itin Italy | VWO | 159 | 28% of installs |
| .plin Poland | VWO | 145 | 29% of installs |
| .brin Brazil | VWO | 420 | 34% of installs |
Other markets
Questions
What is the most used of the A/B testing tools?
VWO, on 20,109 websites in our index (24% of the sites that run any of the 28 we track).
How is market share measured here?
By websites: we read the homepage code of every site in our crawl and count the sites that load each tool. A site that runs two counts for both, so the shares can add up to more than 100%. It's a count of sites, not of revenue or orders.
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