Effect on new websites
TypeScript library for building typed, composable applications with built-in error handling and concurrency.
- Sites using Effect
- 161
- since Jul 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 | Jul 8, 2026 |
|---|---|
| Last seen | Oct 20, 2026 |
| Website | effect.website |
What we found
- Effect appeared on about 70 new sites in the last 30 days.[1]
- Seven in ten new Effect sites also use Vite.
Share of new sites using Effect
The line is the 7-day average share of new sites that use Effect, since 10 September.
Who uses Effect
| Type | Sites | Share | Bar |
|---|---|---|---|
| Developer Tools | 19 | 29.2% | |
| Crypto | 9 | 13.9% | |
| Social | 7 | 10.8% | |
| AI | 6 | 9.2% | |
| Education | 6 | 9.2% | |
| Finance | 4 | 6.2% | |
| Productivity | 4 | 6.2% | |
| Design | 3 | 4.6% | |
| Content | 2 | 3.1% | |
| Games | 2 | 3.1% | |
| Hiring & HR | 2 | 3.1% | |
| Marketing | 1 | 1.5% |
| Ending | Sites | Share | Bar |
|---|---|---|---|
| .com | 63 | 39.1% | |
| .app | 25 | 15.5% | |
| .dev | 23 | 14.3% | |
| .xyz | 10 | 6.2% | |
| .online | 6 | 3.7% | |
| .org | 5 | 3.1% | |
| .cloud | 3 | 1.9% | |
| .io | 3 | 1.9% | |
| .sh | 3 | 1.9% | |
| .ai | 2 | 1.2% | |
| .fr | 2 | 1.2% | |
| .net | 2 | 1.2% |
Javascript Library on new sites
| # | Movement | Tool | Share of category[2] | Bar | |
|---|---|---|---|---|---|
| 1 | – |
jQuery
|
34.5% | ||
| 2 | – |
React Router
|
16.2% | ||
| 3 | – |
Motion
|
14.5% | ||
| 4 | – |
TanStack Router
|
10.8% | ||
| 5 | – |
Swiper
|
8.2% | ||
| … | |||||
| 317 | ▲42 |
Effect
|
<0.1% | ||
All-time shares across the new sites we track: of all of them, and of the sites using any Javascript Library tool. Among September launches it ranked #330 in Javascript Library, up from #372 in August. All 1553 in Javascript Library
Often used with Effect
| Tool | Sites with both | vs all new sites |
|---|---|---|
|
TanStack Router
|
63 | 8.9x |
Vite
|
118 | 3.1x |
Tailwind CSS
|
99 | 2.5x |
Cloudflare DNS
|
116 | 2.4x |
Lucide Icons
|
54 | 2.1x |
Tools that turn up far more often on Effect sites than on new sites in general, and how many times as common each one is there.
Recently launched products built on Effect
64 of the 161 sites using Effect are product launches we list individually. The other 97 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 64.
Watches, exports and the API give you all 161 sites using Effect, 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: UI Library.
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 Effect when we detect Effect 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