Free public CDN that serves npm packages as standards-compliant ES modules.
2,304 sites
2,085 found by StackScope, 219 via launch platforms
- StackScope Wider Web 1,329
- StackScope Discovery (Indie) 756
- Product Hunt 157
- PeerPush 27
- Other 22
- Hacker News 13
esm.sh appeared on about 490 new sites in the last 30 days.
These figures cover websites that went live since April 2026, not the web as a whole.
Get told when a new site ships with esm.sh.
489 new sites with esm.sh first seen in the last 30 days.
Stackdar watches every launch we detect and sends you the ones using esm.sh, by email, Slack or webhook. On every plan, from £15 a month.
See how alerts workShare of new sites using esm.sh
Each dot is one launch day. Line is the 7-day rolling average; weekly averages before July 2026.
The shaded areas were measured against a different set of sites, so the line can step there without esm.sh itself changing.
Coverage details
Before the dashed line where the dots begin, the line is a weekly average. After it, the last 90 days are shown one day at a time.
Grey: before 8 July 2026, we only tracked launches from launch platforms. From that date we crawl the wider web as well.
Amber: 8 July to 10 September 2026, before we improved our infrastructure to 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 10 September. We record each site as it was when we found it.
The share is a proportion of whatever we were tracking at the time. For a single continuous measure, switch to launch platforms.
What kind of sites use esm.sh
1,064 sites with a known type, all time
Domain endings using esm.sh
2,303 sites, all time
- .com 49.2%
- .app 9.9%
- .ai 3.9%
- .io 3.0%
- .online 2.8%
- .dev 2.7%
- .net 2.6%
- .site 2.6%
- .org 2.4%
- .xyz 2.4%
- .co 1.9%
- .in 1.8%
- .fr 1.7%
- .uk 1.5%
- .ca 1.1%
Country
Country likely for 270 of 2,304 sites (11.7%), all time.
How we know
Country comes from what each site says about itself, such as a company registration, legal terms or a phone number, not just its domain ending. Too few sites state their country plainly for the usual count, so this one also counts single signals: a country domain ending, a phone number (for North America, its area code), a location the site declares in its own page metadata, or a country-specific vendor stack and the page language where they agree and nothing contradicts them. Read these as likely rather than certain.
-
United States 18.9%
-
France 14.1%
-
India 13.7%
-
United Kingdom 12.6%
-
Canada 7.0%
-
South Korea 4.4%
-
Australia 3.0%
-
Brazil 3.0%
-
Switzerland 3.0%
-
Japan 2.2%
-
Türkiye 1.5%
-
Spain 1.1%
-
Ireland 1.1%
-
Armenia 0.7%
-
Colombia 0.7%
Green hosting
219 checked sites since Apr 2026.
What this means
The share whose web host The Green Web Foundation lists as running on green energy, against the average for every new site we checked.
- esm.sh 47%
- Average 47%
Package CDN leaders
| Tool | % of sitesall time | % of categoryall time | ||
|---|---|---|---|---|
| #1 | ▲1 |
|
4.4% | 48.5% |
| #2 | ▼1 |
|
4.4% | 48.3% |
| #3 | – |
|
1.7% | 18.7% |
| #4 | – |
|
1.0% | 10.5% |
| #5 | ▼1 |
|
<0.1% | 0.4% |
Percentages show all-time adoption across the new sites we track: the share of all of them, and of the sites using any Package CDN tool. All 37 in Package CDN →
Recent launches using esm.sh
975 of the 2,304 sites using esm.sh are product launches we list individually. The other 1,329 are sites we found crawling the wider web: they count towards the figures above, but we do not publish them one by one. They are included in the StackScope API and in Stackdar alerts. How StackScope Discovery works
Showing the most recent 12 of 975.
The StackScope API serves all 2,304 sites using esm.sh, filterable and exportable, from £15 a month.