B12 on new websites

1. B12 appeared on about 230 new sites in the last 30 days.^[1]
2. Almost all new B12 sites also use Caddy.
3. It is unusually common among developer tool launches: 16%, against 7.3% across new sites.

The line is the 7-day average share of new sites that use B12, since 10 September.

#	Movement	Tool	Share of all sites	Share of category[3]	Bar
1	–	Wix	3.0%	38.9%
2	–	Squarespace	1.5%	19.7%
3	▲24	Webador	0.4%	5.4%
4	▼2	GoDaddy Website Builder	0.3%	3.6%
5	–	Duda	0.2%	3.0%
…
34	▲11	B12	<0.1%	0.2%

All-time shares across the new sites we track: of all of them, and of the sites using any Site Builder tool. Among September launches it ranked #27 in Site Builder, up from #38 in August. All 2502 in Site Builder

Tool	Sites with both	vs all new sites	Bar
Snowplow	826	384x
Astro	625	35x
Caddy	828	33x
IONOS DNS	419	31x
IONOS Email	374	26x

Tools that turn up far more often on B12 sites than on new sites in general, and how many times as common each one is there.

58 of the 837 sites using B12 are product launches we list individually. The other 779 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
Tournament bracket maker: print it or run it live drawthebracket.com	Oct 20
OkUtil · Herramientas gratis en español · Ferramentas grátis no navegador · Alat online gratis, tanpa unggah okutil.com	Oct 20
FairReplace: how old is it, and is the quote fair? fairreplace.com	Oct 18
Inventory requests · Fieldwork Supply atelier-forms.co.uk · Productivity · United Kingdom	Oct 16
RaceForm — Race research workspace thoroughform.online	Oct 16
SheFundsme | Compliance, procurement, and business education she-funds-me.com	Oct 9
Will This Bag Fit? Carry-On Size Check for 158 Airlines willthisbagfit.com	Oct 9
Aftertrace — Behavioral Analysis Unit aftertracebau.com · Games	Oct 8
Chess Openings Lab: Every Chess Opening, Played Out Move by Move chessopeningslab.com	Oct 8
OneCalcs: Pay, Tax and Money Calculators by Country onecalcs.com · Finance	Oct 6
Random Name Generator: Real Names From 12 Countries allthenames.com	Oct 2
CommissaryMap: commissary kitchens and shared kitchens near you commissarymap.com	Oct 1

Showing the most recent 12 of 58.

Watches, exports and the API give you all 837 sites using B12, from £15 a month.

1. These figures cover websites that went live since April 2026, not the web as a whole.
2. 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.
3. Some products people expect to see here are filed under a related category: CMS, Ecommerce, AI Builder.