Scarf on new websites

1. Scarf appeared on 1 new site in the last 30 days.^[1]

The line is the 7-day average share of new sites that use Scarf, day by day for the last 90 days and weekly before that (left of the dashed line). It starts at our first detection. The shaded areas were measured against a different set of sites, so the line can step there without Scarf itself changing.^[2][3]

#	Movement	Tool	Share of all sites	Share of category	Bar
1	–	Google Analytics	10.4%	43.2%
2	–	Tinybird	3.8%	15.6%
3	▼1	Cloudflare Web Analytics	2.5%	10.4%
4	▲1	Sourcebuster	2.5%	10.4%
5	–	Vercel Analytics	1.7%	6.9%
…
639		Scarf	<0.1%	<0.1%

All-time shares across the new sites we track: of all of them, and of the sites using any Analytics tool. All 1487 in Analytics

2 of the 4 sites using Scarf are product launches we list individually. The other 2 are sites we found crawling the wider web: they count towards the figures above, but we do not publish them one by one.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.

Site	Found	Also detected
Your notes, your files, and your AI agents, working together. celorga.io · Productivity	Oct 8
CVE Lite CLI owasp.org · Developer Tools	Jun 16

The StackScope API serves all 4 sites using Scarf, filterable and exportable, from £15 a month.

1. These figures cover websites that went live since April 2026, not the web as a whole.
2. Grey: before 8 July 2026, we only tracked launches from launch platforms. From that date we crawl the wider web as well, so the share is measured against a much larger set of sites. For one continuous measure, view launch platforms only.
3. 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.