Observable on new websites

1. Observable appeared on 2 new sites in the last 30 days.^[1]

The line is the 7-day average share of new sites that use Observable, since 27 September. It starts at our first detection.

#	Movement	Tool	Share of all sites	Share of category	Bar
1	–	Vite	23.6%	98.3%
2	–	pywb (Wayback Machine toolkit)	0.1%	0.3%
3	▲1	Instant.page	0.1%	0.2%
4	▼1	Weglot	<0.1%	0.2%
5	▲2	Rack CORS	<0.1%	0.1%
6	–	Istio	<0.1%	0.1%
7	▼2	Adobe Flash (AC_RunActiveContent embed script)	<0.1%	0.1%
8	–	Google Apps Script	<0.1%	0.1%
9	–	Rspack	<0.1%	0.1%
10	–	Jam	<0.1%	0.1%
11	–	VSCode for the Web	<0.1%	0.1%
12	–	Quarto	<0.1%	<0.1%
…
177	▲7	Observable	<0.1%	<0.1%

All-time shares across the new sites we track: of all of them, and of the sites using any Developer Tools tool. Among September launches it ranked #175 in Developer Tools, up from #182 in August. All 513 in Developer Tools

1 of the 5 sites using Observable are product launches we list individually. The other 4 are new business and personal sites: they count towards the figures above but are not listed here. A watch sends them to you.

Site	Found	Also detected
GPT-Live-1.1 openai.com · AI	Oct 23

Watches, exports and the API give you all 5 sites using Observable, from £15 a month.

1. These figures cover websites that went live since April 2026, not the web as a whole.