ES module-aware package CDN that serves npm packages with import map support.
Get told when a new site ships with JSPM CDN.
Stackdar watches every launch we detect and sends you the ones using JSPM CDN, by email, Slack or webhook. On every plan, from £15 a month.
See how alerts work155 sites
129 found by StackScope, 26 via launch platforms
- StackScope Wider Web 101
- StackScope Discovery (Indie) 28
- Product Hunt 16
- Hacker News 7
- PeerPush 3
JSPM CDN has been detected on 155 launches we've crawled. The 7-day rolling share is 0.0%, roughly steady week on week. Most recent detection: Libboard – aplikacja dla korepetytorów | uczniowie, kalendarz, finanse, tablica online, today.
It's most commonly paired with HSTS, Rails, and Tailwind CSS. By product type, the launches using it are most often Content (15%), Developer Tools (15%), and Productivity (15%). The 28 scored launches using JSPM CDN average a StackScope score of 6.9 out of 10, against 6.4 across all launches we score.
What kind of products ship with JSPM CDN
54 launches
Domain endings using JSPM CDN
153 sites
- .com 51.63%
- .org 11.11%
- .app 5.23%
- .ca 5.23%
- .ai 3.27%
- .io 2.61%
- .site 2.61%
- .blog 1.96%
- .online 1.96%
- .so 1.96%
- .co 1.31%
- .nz 1.31%
Share of new sites using JSPM CDN
Each dot is one launch day. Line is the 7-day rolling average; weekly averages before June 2026.
The shaded part of the chart is measured against a different set of sites. Until 8 July 2026 we only tracked launches from launch platforms; from that date we crawl the wider web as well. The share is a proportion of whatever we were tracking at the time, so it can step at that line without the technology itself changing. For a single continuous measure, switch to launch platforms.
Package CDN leaders
| Tool | % of launches | % of category | ||
|---|---|---|---|---|
| #1 | ▲1 |
|
4.67% | 49.20% |
| #2 | ▼1 |
|
4.60% | 48.45% |
| #3 | – |
|
1.89% | 19.94% |
| #4 | – |
|
0.83% | 8.70% |
| #5 | – |
|
0.05% | 0.54% |
| … | ||||
| #7 | ▼2 |
|
0.01% | 0.06% |
Percentages show adoption among indie launches: the share of all analysed launches, and of launches using any Package CDN tool.Among August launches it ranked #8 in Package CDN, down from #6 in July. All 35 in Package CDN →
Recent launches we can show
54 of the 155 sites using JSPM CDN are product launches we list individually. The other 101 are sites we found crawling the wider web: they count towards the figures above, but we do not publish them one by one.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
Session Replay
Developer Tools
QR Penguin
Showing the most recent 12 of 54.
The StackScope API serves all 155 sites using JSPM CDN, filterable and exportable, from £15 a month.