Cofounder on new websites
AI-assisted platform for building and launching web applications.
- Sites using Cofounder
- 42
- since Jul 2026
- Last 30 days
- 0.0%
-
of new sites, to Oct 21
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 | Jul 9, 2026 |
|---|---|
| Last seen | Oct 20, 2026 |
| Website | cofounder.co |
What we found
- Cofounder appeared on 7 new sites in the last 30 days.[1]
- Almost all new Cofounder sites also use Vercel.
Share of new sites using Cofounder
The line is the 7-day average share of new sites that use Cofounder, since 12 September. It starts at our first detection.
Who uses Cofounder
| Type | Sites | Share | Bar |
|---|---|---|---|
| Marketing | 11 | 42.3% | |
| Productivity | 4 | 15.4% | |
| Finance | 3 | 11.5% | |
| Developer Tools | 2 | 7.7% | |
| Education | 2 | 7.7% | |
| Health | 2 | 7.7% | |
| E-commerce | 1 | 3.9% | |
| Social | 1 | 3.9% |
| Ending | Sites | Share | Bar |
|---|---|---|---|
| .com | 15 | 35.7% | |
| .co | 6 | 14.3% | |
| .app | 5 | 11.9% | |
| .io | 4 | 9.5% | |
| .ai | 3 | 7.1% | |
| .org | 3 | 7.1% | |
| .dev | 2 | 4.8% | |
| .online | 1 | 2.4% |
AI Builder on new sites
| # | Movement | Tool | Share of category[2] | Bar | |
|---|---|---|---|---|---|
| 1 | – |
Base44
|
18.4% | ||
| 2 | – |
Hostinger AI Builder
|
15.9% | ||
| 3 | – |
Lovable
|
15.5% | ||
| 4 | ▲1 | GoDaddy Airo AI Builder | 11.1% | ||
| 5 | ▼1 |
Replit
|
9.7% | ||
| … | |||||
| 55 | ▼21 |
Cofounder
|
<0.1% | ||
All-time shares across the new sites we track: of all of them, and of the sites using any AI Builder tool. Among September launches it ranked #69 in AI Builder, down from #48 in August. All 241 in AI Builder
Often used with Cofounder
| Tool | Sites with both | vs all new sites |
|---|---|---|
Vercel
|
42 | 7.7x |
Next.js
|
42 | 7.3x |
React
|
42 | 3.8x |
Tailwind CSS
|
35 | 3.4x |
Tools that turn up far more often on Cofounder sites than on new sites in general, and how many times as common each one is there.
Recently launched products built on Cofounder
27 of the 42 sites using Cofounder are product launches we list individually. The other 15 are new business and personal sites: they count towards the figures above but are not listed here. A watch sends them to you.
Showing the most recent 12 of 27.
Watches, exports and the API give you all 42 sites using Cofounder, from £15 a month.
Notes
- These figures cover websites that went live since April 2026, not the web as a whole.
- Some products people expect to see here are filed under a related category: Site Builder.
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 Cofounder when we detect Cofounder 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