Sites built with Cart.js
JavaScript library for building custom Shopify AJAX cart interfaces.
Get told when a new site ships with Cart.js.
Stackdar watches every launch we detect and sends you the ones using Cart.js, by email, Slack or webhook. On every plan, from £15 a month.
See how alerts work100 sites
99 found by StackScope, 1 via launch platforms
- StackScope Wider Web 97
- StackScope Discovery (Indie) 2
- Product Hunt 1
Cart.js has been detected on 100 launches we've crawled, with 43 of those in September 2026 (0.0% of the month's launches so far). The 7-day rolling share is 0.0%, roughly steady week on week. Most recent detection: Rent Ledger Pro, today.
It's most commonly paired with Shopify, jQuery, and Cloudflare. By product type, the launches using it are most often E-commerce (55%), Health (18%), and Games (16%). By domain ending, launches using it are 52.9 times as likely as the average launch to live on a .store domain.
What kind of products ship with Cart.js
38 launches
Domain endings using Cart.js
100 sites
- .com 51.00%
- .store 22.00%
- .uk 7.00%
- .net 3.00%
- .online 3.00%
- .co 2.00%
Country
13 of 100 sites, where we are semi-confident of the country.
-
United Kingdom
38.46%
-
Indonesia
15.38%
-
Canada
7.69%
-
Germany
7.69%
-
Denmark
7.69%
-
Japan
7.69%
Share of new sites using Cart.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
|
14.60% | 35.58% |
| #2 | – |
React Router
|
6.32% | 15.40% |
| #3 | – |
Motion
|
5.93% | 14.44% |
| #4 | – |
TanStack Router
|
4.12% | 10.03% |
| #5 | – |
Swiper
|
3.75% | 9.14% |
| … | ||||
| #315 | ▲32 | Cart.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.Cart.js is typically used alongside jQuery rather than instead of it.Among August launches it ranked #311 in Javascript Library, up from #343 in July. All 1324 in Javascript Library →
Often used with
| Tool | Sites |
|---|---|
Shopify
|
99 |
|
jQuery
|
97 |
Cloudflare
|
95 |
Vite
|
93 |
| HTTP/3 | 85 |
Tools most often detected on the same sites as Cart.js.
Recent launches we can show
3 of the 100 sites using Cart.js are product launches we list individually. The other 97 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 100 sites using Cart.js, filterable and exportable, from £15 a month.