Sites built with Porthole.js
Open source JavaScript library for secure cross-domain messaging between a page and an embedded iframe.
Found via: StackScope Discovery (Indie) 1 · StackScope Wider Web 23
Porthole.js has been detected on 24 launches we've crawled, with 13 of those in September 2026 (0.0% of the month's launches so far). Most recent detection: Untitled site, yesterday.
It's most commonly paired with jQuery, Cloudflare, and Google Fonts.
Domain endings using Porthole.js
24 sites
- .com 70.83%
- .ca 8.33%
- .ai 4.17%
- .app 4.17%
- .co 4.17%
- .de 4.17%
- .space 4.17%
Share of new sites using Porthole.js
Each dot is one launch day. Line is the 7-day rolling average. Chart starts at first detection.
The shaded parts of the chart are measured against a different set of sites.
Grey: until 8 July 2026 we only tracked launches from launch platforms. From that date we crawl the wider web as well.
Amber: on 10 September 2026 we improved our infrastructure so we can index new sites much sooner, often on the day they go live. Sites found that early often haven't finished setting up, so anything usually added after launch reads lower from that date. We record each site as it was when we found it.
The share is a proportion of whatever we were tracking at the time, so it can step at these lines without the technology itself changing. For a single continuous measure, switch to launch platforms.
Javascript Library leaders
| Tool | % of launches | % of category | ||
|---|---|---|---|---|
| #1 | – |
jQuery
|
14.59% | 35.46% |
| #2 | – |
React Router
|
6.36% | 15.47% |
| #3 | – |
Motion
|
5.91% | 14.36% |
| #4 | – |
TanStack Router
|
4.19% | 10.18% |
| #5 | – |
Swiper
|
3.67% | 8.92% |
| … | ||||
| #576 | ▲215 |
Porthole.js
Current page
|
<0.01% | <0.01% |
Percentages show adoption among indie launches: the share of all analysed launches, and of launches using any Javascript Library tool.Among August launches it ranked #554 in Javascript Library, up from #769 in July. All 1389 in Javascript Library →
Often used with
| Tool | Sites |
|---|---|
|
jQuery
|
24 |
Cloudflare
|
22 |
Google Fonts
|
22 |
| HSTS | 21 |
Kartra
|
21 |
Tools most often detected on the same sites as Porthole.js.
Recent launches we can show
1 of the 24 sites using Porthole.js are product launches we list individually. The other 23 are sites we found crawling the wider web: they count towards the figures above, but we do not publish them one by one. How StackScope Discovery works
The StackScope API serves all 24 sites using Porthole.js, filterable and exportable, from £15 a month.