Developer Tools Tools

1. Vite runs on more than half of the sites using a developer tools tool (98%), 299 times as many sites as pywb (Wayback Machine toolkit).
2. Only one of the 504 developer tools tools we track runs on more than 1% of these sites.
3. Among sites launched in September, Rack CORS rose to #5 from #7 in August.

#	Movement	Tool	Country	Share	Bar	Sites	90 days
1	–	Vite Modern JavaScript build tool and dev server (created by Evan You) used by Vue, React, Svelte, and Solid SPAs scaffolded with create-vite.		98%		1,423,121
2	–	pywb (Wayback Machine toolkit) Web archive replay toolkit that rewrites pages using the wombat.js client-side proxy.		0.3%		4,759
3	▲1	Instant.page Link prefetching script for faster page navigation.		0.2%		3,158
4	▼1	Weglot Website translation and localisation platform.		0.2%		2,909
5	▲2	Rack CORS CORS middleware for Ruby Rack applications.		0.1%		2,145
6	–	Istio Istio service mesh - L7 traffic management on top of Envoy.		0.1%		1,907
7	▼2	A Adobe Flash (AC_RunActiveContent embed script) Legacy Adobe JavaScript helpers for embedding Flash content in a page and checking the visitor's Flash Player version.		0.1%		1,544
8	–	Google Apps Script Cloud-based scripting platform for automating Google Workspace apps; its embedded widgets show on some sites.		<0.1%		1,369
9	▲1	Rspack Fast Rust based JavaScript bundler compatible with the webpack ecosystem.		<0.1%		1,332
10	▼1	Jam Browser extension that captures bug reports with full console, network, and reproduction context.		<0.1%		940
11	–	VSCode for the Web VSCode for the Web (vscode.dev / github.dev / similar self-hosted variants),.		<0.1%		801
12	–	Quarto Open-source scientific and technical publishing system.		<0.1%		577
13	–	U Uploadly Embeddable file upload widget for websites.		<0.1%		371
14	▼4	GitHub Source code hosting and collaboration platform whose embeds, badges, and avatars appear on many developer sites.		<0.1%		353
15	▼1	n8n Workflow automation and integration platform.		<0.1%		265

Share is of the 1,448,101 sites using a developer tools tool; a site can use more than one. Arrows compare each tool's rank among sites launched in September with August. The line is its share of new sites over 90 days. Showing the top 15 of 504.

Watches, exports and the API give you every developer tools tool and the sites using each, from £15 a month.

Other kinds of tool most often found on the same sites, leaving out the plumbing every site has (DNS, CDN, hosting).

• CSS Framework 20,996
• Analytics 16,818
• UI Library 16,781
• Font 14,305
• Javascript Library 13,736
• Framework 11,560