Optimizely on new websites
A/B testing, experimentation, and digital experience platform for marketing and product teams.
- Sites using Optimizely
- 638
- since May 2026
- Last 30 days
- 0.0%
-
of new sites, to Oct 19
no change on the 30 days before - Last 7 days
- 0.0%
- of new sites, 7-day average
no change on the week before
| First seen | May 13, 2026 |
|---|---|
| Last seen | Oct 19, 2026 |
| Website | optimizely.com |
What we found
- Optimizely appeared on about 180 new sites in the last 30 days.[1]
- Eight in ten new Optimizely sites also use Google Tag Manager.
Share of new sites using Optimizely
The line is the 7-day average share of new sites that use Optimizely, since 10 September.
Who uses Optimizely
| Type | Sites | Share | Bar |
|---|---|---|---|
| E-commerce | 42 | 49.4% | |
| Developer Tools | 20 | 23.5% | |
| Design | 4 | 4.7% | |
| Health | 4 | 4.7% | |
| Education | 3 | 3.5% | |
| AI | 2 | 2.4% | |
| Content | 2 | 2.4% | |
| Crypto | 2 | 2.4% | |
| Finance | 2 | 2.4% | |
| Games | 2 | 2.4% | |
| Productivity | 2 | 2.4% |
| Country | Sites | Share | Bar |
|---|---|---|---|
 US |
41 | 38.3% | |
 UK |
23 | 21.5% | |
 Japan |
11 | 10.3% | |
 Australia |
9 | 8.4% | |
 Germany |
5 | 4.7% | |
 New Zealand |
5 | 4.7% | |
 Canada |
4 | 3.7% | |
 Czechia |
4 | 3.7% | |
 Sweden |
3 | 2.8% | |
 Israel |
1 | 0.9% | |
 Netherlands |
1 | 0.9% |
| Ending | Sites | Share | Bar |
|---|---|---|---|
| .com | 460 | 72.1% | |
| .nz | 49 | 7.7% | |
| .uk | 24 | 3.8% | |
| .net | 15 | 2.4% | |
| .org | 12 | 1.9% | |
| .store | 11 | 1.7% | |
| .ca | 10 | 1.6% | |
| .co | 10 | 1.6% | |
| .au | 9 | 1.4% | |
| .live | 6 | 0.9% | |
| .art | 4 | 0.6% |
Analytics on new sites
| # | Movement | Tool | Share of category | Bar | |
|---|---|---|---|---|---|
| 1 | – |
Google Analytics
|
43.0% | ||
| 2 | – |
Tinybird
|
15.7% | ||
| 3 | ▼1 |
Cloudflare Web Analytics
|
10.4% | ||
| 4 | ▲1 |
Sourcebuster
|
10.4% | ||
| 5 | – |
Vercel Analytics
|
6.9% | ||
| … | |||||
| 56 | ▼2 |
Optimizely
|
<0.1% | ||
All-time shares across the new sites we track: of all of them, and of the sites using any Analytics tool. Optimizely is typically used alongside Google Analytics rather than instead of it. Among September launches it ranked #55 in Analytics, down from #53 in August. All 1507 in Analytics
Often used with Optimizely
| Tool | Sites with both | vs all new sites |
|---|---|---|
Segment
|
269 | 362x |
TikTok Pixel
|
260 | 53x |
Google Ads
|
309 | 18x |
Facebook Pixel
|
293 | 14x |
Google Tag Manager
|
511 | 6.8x |
Tools that turn up far more often on Optimizely sites than on new sites in general, and how many times as common each one is there.
Recently launched products built on Optimizely
12 of the 638 sites using Optimizely are product launches we list individually. The other 626 are new business and personal sites: they count towards the figures above but are not listed here. A watch sends them to you.
-
CodeSpotlight
plugins.jetbrains.com
-
Agentic Requirements Engineering
altium.com
-
Loglens
rws.com
-
AI Spend Console by Rippling
rippling.com
-
AI-Native Contract Intelligence
icertis.com
-
Python Full Stack with AI
us06web.zoom.us
Russia
Brazil
Watches, exports and the API give you all 638 sites using Optimizely, from £15 a month.
Notes
- These figures cover websites that went live since April 2026, not the web as a whole.
- Country comes from what each site says about itself, such as a company registration, legal terms or a phone number, not just its domain ending. Too few sites state their country plainly for the usual count, so this one also counts single signals: a country domain ending, a phone number (for North America, its area code), a location the site declares in its own page metadata, or a country-specific vendor stack and the page language where they agree and nothing contradicts them. Read these as likely rather than certain.
How this page is made
FirstSited looks at each new website near the day it goes live and records what it was built with. We do not go back later, so these figures describe what sites launch with, not what they run today. A site counts towards Optimizely when we detect Optimizely on it at that look.
Every share on this page is a proportion of the new sites we were tracking at the time. Sites we found across the wider web count towards the figures, but only product launches are listed by name. How we detect technologies · How we find new sites