How does PageSourceSearch know what fossa.com is built with?

From the site's own source code. The crawler stores the exact bytes of its pages and first-party scripts; the libraries are recognised by fingerprinting that code against known releases, the identifiers are read out of the tag snippets, and the third-party hosts are the script, iframe and stylesheet sources in the HTML and the absolute URLs inside the scripts. Nothing is inferred from headers or guessed.

How far back does the history of fossa.com go?

To the first crawl the timeline lists. Every crawl records what the site looked like; when a file's content changes, its earlier version stays viewable because the stored chunks are never deleted, only mapped. A crawl that finds a file unchanged adds no copy.

Can I see an older version of a script from fossa.com?

Yes. In the stored files list, every date under a file opens the version that was live at that crawl, with the same viewer as the current one. The raw bytes can be downloaded from there.

Which other websites use the same tracking IDs as fossa.com?

Each identifier links to its reverse lookup, the list of every site in the index whose source carries the same id: the sites one analytics property or tag manager container is shared across.

Site profile

fossa.com

Built with gtm, react 18.2.0, @clerk/ui 1.34.0, @splinetool/runtime 2.0.56, dashjs 5.2.1, posthog-js 1.434.12, @marimo-team/frontend 0.25.0, @inkeep/cxkit-js 0.5.119, @reachfive/identity-core 1.42.0, @reachfive/identity-ui 2.1.0, jspdf 4.2.1, @desivocal/agents-cdn 1.0.21 and more. 5 pages and 108 stored files, last crawled 2026-10-02.

rank 399,509 26 libraries 2 identifiers 29 third-party hosts 1 crawl open the site

Technologies and libraries

Recognised by fingerprinting the stored files and bundles against known releases; a version is the release the bytes match.

Library	Version	Seen
gtm		2026-10-02
react	18.2.0	2026-10-02
@clerk/ui	1.34.0	2026-10-02
@splinetool/runtime	2.0.56	2026-10-02
dashjs	5.2.1	2026-10-02
posthog-js	1.434.12	2026-10-02
@marimo-team/frontend	0.25.0	2026-10-02
@inkeep/cxkit-js	0.5.119	2026-10-02
@reachfive/identity-core	1.42.0	2026-10-02
@reachfive/identity-ui	2.1.0	2026-10-02
jspdf	4.2.1	2026-10-02
@desivocal/agents-cdn	1.0.21	2026-10-02
spectorjs	0.9.33	2026-10-02
universalviewer	4.4.4	2026-10-02
threejs-components	0.0.30	2026-10-02
@moveo-ai/web-client	0.117.0	2026-10-02
mtr-facemesh	7.8.0	2026-10-02
ovenplayer	0.10.54	2026-10-02
graphql-playground-react	1.7.28	2026-10-02
@recogito/annotorious	2.7.14	2026-10-02
@ant-design/x	2.9.0	2026-10-02
mori-chat-widget	2.0.49	2026-10-02
@crystaldesign/diva-core	26.11.0	2026-10-02
@joyfill/components	4.0.0-rc26	2026-10-02
@perceptimagery/sprie-widget	1.3.3015	2026-10-02
three-globe	2.45.2	2026-09-24

Tracking, tag and verification IDs

Public identifiers read out of the source. Each links to every other site in the index that carries the same one.

What	Value	Found in
Google Tag Manager container (Google)	GTM-MR3C3W7	view source
Segment write key (Twilio Segment)	2vTHlibbzjKN8zyTTHEfrzfBUQ1	view source

Third-party hosts

Hosts outside fossa.com that its pages load scripts, frames or stylesheets from, and that its own scripts name in absolute URLs (connect). Each links to every site loading from the same host.

Host	Loaded as	Found in
app.cal.com	connect	view source
app.posthog.com	connect	view source
cdn.prod.website-files.com	connect	view source
cdn.statuspage.io	script	view source
cdn.worldvectorlogo.com	connect	view source
fossa.zoom.us	connect	view source
github.com	connect	view source
github.githubassets.com	connect	view source
plug-platform.devrev.ai	script	view source
react.dev	connect	view source
schema.org	connect	view source
sentry.io	connect	view source
softwareengineeringdaily.com	connect	view source
stackshare.io	connect	view source
tldrlegal.com	connect	view source
upload.wikimedia.org	connect	view source
uploads-ssl.webflow.com	connect	view source
us.i.posthog.com	connect	view source
us.posthog.com	connect	view source
vercel.live	connect	view source
via.placeholder.com	connect	view source
www.googletagmanager.com	iframe	view source
www.jenkins.io	connect	view source
www.pulumi.com	connect	view source
www.terraform.io	connect	view source
www.w3.org	connect	view source
www.youtube.com	iframe connect	view source
yandex.com	connect	view source
youtu.be	connect	view source

Stored pages and scripts

The newest stored version of each file, newest first@if (p.FilesTruncated) { (the 500 newest of 108) }. Versions are the crawls at which the file was new or its content changed; each opens the file as it was then, rebuilt from the same stored chunks.

File	Kind	Size	Collected	Versions
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https://fossa.com/_next/static/chunks/8432.269384baac74e6b9.js	js	65.1 KB	2026-10-02	current
https://fossa.com/_next/static/chunks/8205.bd8d7dc59863230b.js	js	6.4 KB	2026-10-02	current
https://fossa.com/_next/static/chunks/4841.f8e794b1124d289b.js	js	3.9 KB	2026-10-02	current
https://fossa.com/_next/static/chunks/4357.ed3805f31cd8ee1f.js	js	1.7 KB	2026-10-02	current
https://fossa.com/_next/static/chunks/3359.f753ad5428b22855.js	js	5.9 KB	2026-10-02	current
https://fossa.com/_next/static/chunks/c245c94a-2168c3107fb65f3a.js	js	323.3 KB	2026-10-02	current
https://fossa.com/_next/static/chunks/960ec043-5b16dd856f69f4f3.js	js	358.5 KB	2026-10-02	current
https://fossa.com/_next/static/chunks/pages/_error-534f194f1a095849.js	js	224 B	2026-10-02	current
https://fossa.com/_next/static/vIZX9ozlxOlcSjD_cxa3j/_ssgManifest.js	js	640 B	2026-10-02	2026-10-02
https://fossa.com/_next/static/vIZX9ozlxOlcSjD_cxa3j/_buildManifest.js	js	5.2 KB	2026-10-02	2026-10-02
https://fossa.com/_next/static/chunks/app/pricin…pl_8vvxBPn2zFW4JgMXWvjcnwAdYcyN	js	21.5 KB	2026-10-02	2026-10-02
https://fossa.com/_next/static/chunks/2120-24b2d…pl_8vvxBPn2zFW4JgMXWvjcnwAdYcyN	js	46.3 KB	2026-10-02	2026-10-02
https://fossa.com/_next/static/chunks/3674-48f1b…pl_8vvxBPn2zFW4JgMXWvjcnwAdYcyN	js	21.4 KB	2026-10-02	2026-10-02
https://fossa.com/_next/static/chunks/app/blog/p…pl_8vvxBPn2zFW4JgMXWvjcnwAdYcyN	js	11.8 KB	2026-10-02	2026-10-02
https://fossa.com/_next/static/chunks/app/blog/l…pl_8vvxBPn2zFW4JgMXWvjcnwAdYcyN	js	3.8 KB	2026-10-02	2026-10-02
https://fossa.com/_next/static/chunks/app/blog/%…pl_8vvxBPn2zFW4JgMXWvjcnwAdYcyN	js	26.5 KB	2026-10-02	2026-10-02
https://fossa.com/_next/static/chunks/2401-6408c…pl_8vvxBPn2zFW4JgMXWvjcnwAdYcyN	js	59 KB	2026-10-02	2026-10-02
https://fossa.com/_next/static/chunks/app/produc…pl_8vvxBPn2zFW4JgMXWvjcnwAdYcyN	js	53.4 KB	2026-10-02	2026-10-02
https://fossa.com/_next/static/chunks/2797-43b37…pl_8vvxBPn2zFW4JgMXWvjcnwAdYcyN	js	27.3 KB	2026-10-02	2026-10-02
https://fossa.com/_next/static/chunks/webpack-24…pl_8vvxBPn2zFW4JgMXWvjcnwAdYcyN	js	4.2 KB	2026-10-02	2026-10-02
https://fossa.com/_next/static/chunks/polyfills-…pl_8vvxBPn2zFW4JgMXWvjcnwAdYcyN	js	110 KB	2026-10-02	2026-10-02
https://fossa.com/_next/static/chunks/app/page-2…pl_8vvxBPn2zFW4JgMXWvjcnwAdYcyN	js	32.2 KB	2026-10-02	2026-10-02
https://fossa.com/_next/static/chunks/5918-4331c…pl_8vvxBPn2zFW4JgMXWvjcnwAdYcyN	js	32 KB	2026-10-02	2026-10-02
https://fossa.com/_next/static/chunks/2956-aa801…pl_8vvxBPn2zFW4JgMXWvjcnwAdYcyN	js	196.2 KB	2026-10-02	2026-10-02
https://fossa.com/_next/static/chunks/8658-0e44b…pl_8vvxBPn2zFW4JgMXWvjcnwAdYcyN	js	11.4 KB	2026-10-02	2026-10-02
https://fossa.com/_next/static/chunks/1970-c8b61…pl_8vvxBPn2zFW4JgMXWvjcnwAdYcyN	js	7.2 KB	2026-10-02	2026-10-02
https://fossa.com/_next/static/chunks/app/not-fo…pl_8vvxBPn2zFW4JgMXWvjcnwAdYcyN	js	9.1 KB	2026-10-02	2026-10-02
https://fossa.com/_next/static/chunks/app/error-…pl_8vvxBPn2zFW4JgMXWvjcnwAdYcyN	js	5 KB	2026-10-02	2026-10-02
https://fossa.com/_next/static/chunks/5867-0712a…pl_8vvxBPn2zFW4JgMXWvjcnwAdYcyN	js	147.9 KB	2026-10-02	2026-10-02
https://fossa.com/_next/static/chunks/app/%5B...…pl_8vvxBPn2zFW4JgMXWvjcnwAdYcyN	js	14 KB	2026-10-02	2026-10-02
https://fossa.com/_next/static/chunks/8056-938d5…pl_8vvxBPn2zFW4JgMXWvjcnwAdYcyN	js	15.9 KB	2026-10-02	2026-10-02
https://fossa.com/_next/static/chunks/5334-a6c93…pl_8vvxBPn2zFW4JgMXWvjcnwAdYcyN	js	17.8 KB	2026-10-02	2026-10-02
https://fossa.com/_next/static/chunks/3289b1db-c…pl_8vvxBPn2zFW4JgMXWvjcnwAdYcyN	js	168.9 KB	2026-10-02	2026-10-02
https://fossa.com/_next/static/chunks/2699f8d2-6…pl_8vvxBPn2zFW4JgMXWvjcnwAdYcyN	js	202.8 KB	2026-10-02	2026-10-02
https://fossa.com/_next/static/chunks/67ab6899-b…pl_8vvxBPn2zFW4JgMXWvjcnwAdYcyN	js	289.7 KB	2026-10-02	2026-10-02
https://fossa.com/_next/static/chunks/c245c94a-2…pl_8vvxBPn2zFW4JgMXWvjcnwAdYcyN	js	323.3 KB	2026-10-02	2026-10-02
https://fossa.com/_next/static/chunks/960ec043-5…pl_8vvxBPn2zFW4JgMXWvjcnwAdYcyN	js	358.5 KB	2026-10-02	2026-10-02
https://fossa.com/_next/static/chunks/app/layout…pl_8vvxBPn2zFW4JgMXWvjcnwAdYcyN	js	9.2 KB	2026-10-02	2026-10-02
https://fossa.com/_next/static/chunks/6282-91365…pl_8vvxBPn2zFW4JgMXWvjcnwAdYcyN	js	10.7 KB	2026-10-02	2026-10-02
https://fossa.com/_next/static/chunks/5394-8b668…pl_8vvxBPn2zFW4JgMXWvjcnwAdYcyN	js	60.7 KB	2026-10-02	2026-10-02
https://fossa.com/_next/static/chunks/6196-ecbda…pl_8vvxBPn2zFW4JgMXWvjcnwAdYcyN	js	17.5 KB	2026-10-02	2026-10-02
https://fossa.com/_next/static/chunks/6151-162fe…pl_8vvxBPn2zFW4JgMXWvjcnwAdYcyN	js	6.6 KB	2026-10-02	2026-10-02
https://fossa.com/_next/static/chunks/9227-b17fa…pl_8vvxBPn2zFW4JgMXWvjcnwAdYcyN	js	39 KB	2026-10-02	2026-10-02
https://fossa.com/_next/static/chunks/692-e95518…pl_8vvxBPn2zFW4JgMXWvjcnwAdYcyN	js	69.7 KB	2026-10-02	2026-10-02
https://fossa.com/_next/static/chunks/239-025987…pl_8vvxBPn2zFW4JgMXWvjcnwAdYcyN	js	11.6 KB	2026-10-02	2026-10-02
https://fossa.com/_next/static/chunks/6229-80eee…pl_8vvxBPn2zFW4JgMXWvjcnwAdYcyN	js	105.3 KB	2026-10-02	2026-10-02
https://fossa.com/_next/static/chunks/7581-893af…pl_8vvxBPn2zFW4JgMXWvjcnwAdYcyN	js	12.9 KB	2026-10-02	2026-10-02
https://fossa.com/_next/static/chunks/9940-92812…pl_8vvxBPn2zFW4JgMXWvjcnwAdYcyN	js	13.3 KB	2026-10-02	2026-10-02
https://fossa.com/_next/static/chunks/3a0efb3d-d…pl_8vvxBPn2zFW4JgMXWvjcnwAdYcyN	js	204.8 KB	2026-10-02	2026-10-02
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https://fossa.com/_next/static/chunks/1299-75c75…pl_8vvxBPn2zFW4JgMXWvjcnwAdYcyN	js	8.4 KB	2026-10-02	2026-10-02
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https://fossa.com/_next/static/chunks/main-app-7…pl_8vvxBPn2zFW4JgMXWvjcnwAdYcyN	js	528 B	2026-10-02	2026-10-02
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https://fossa.com/pricing/	html	134.3 KB	2026-10-02	2026-10-02
https://fossa.com/blog/	html	2.2 MB	2026-10-02	2026-10-02
https://fossa.com/products/fossabot/	html	275.2 KB	2026-10-02	2026-10-02
https://app.fossa.com/auth/login	html	13.5 KB	2026-10-02	2026-10-02
https://fossa.com/	html	409.9 KB	2026-10-02	2026-10-02
https://fossa.com/_next/static/RrgrM7i0OhVKZPQAX1odj/_ssgManifest.js	js	640 B	2026-09-24	current
https://fossa.com/_next/static/RrgrM7i0OhVKZPQAX1odj/_buildManifest.js	js	5.2 KB	2026-09-24	current
https://fossa.com/_next/static/chunks/app/pricin…pl_EgT7RWX1JK8nrfvBmTgoz4manVQJ	js	21.5 KB	2026-09-24	current
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https://fossa.com/_next/static/chunks/app/blog/p…pl_EgT7RWX1JK8nrfvBmTgoz4manVQJ	js	11.8 KB	2026-09-24	current
https://fossa.com/_next/static/chunks/app/blog/l…pl_EgT7RWX1JK8nrfvBmTgoz4manVQJ	js	3.8 KB	2026-09-24	current
https://fossa.com/_next/static/chunks/app/blog/%…pl_EgT7RWX1JK8nrfvBmTgoz4manVQJ	js	26.5 KB	2026-09-24	current
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https://fossa.com/_next/static/chunks/polyfills-…pl_EgT7RWX1JK8nrfvBmTgoz4manVQJ	js	110 KB	2026-09-24	current
https://fossa.com/_next/static/chunks/webpack-24…pl_EgT7RWX1JK8nrfvBmTgoz4manVQJ	js	4.1 KB	2026-09-24	current
https://fossa.com/_next/static/chunks/app/page-2…pl_EgT7RWX1JK8nrfvBmTgoz4manVQJ	js	32.2 KB	2026-09-24	current
https://fossa.com/_next/static/chunks/2956-aa801…pl_EgT7RWX1JK8nrfvBmTgoz4manVQJ	js	196.2 KB	2026-09-24	current
https://fossa.com/_next/static/chunks/5918-4331c…pl_EgT7RWX1JK8nrfvBmTgoz4manVQJ	js	32 KB	2026-09-24	current
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https://fossa.com/_next/static/chunks/1970-c8b61…pl_EgT7RWX1JK8nrfvBmTgoz4manVQJ	js	7.2 KB	2026-09-24	current
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https://fossa.com/_next/static/chunks/app/error-…pl_EgT7RWX1JK8nrfvBmTgoz4manVQJ	js	5 KB	2026-09-24	current
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https://fossa.com/_next/static/chunks/2699f8d2-6…pl_EgT7RWX1JK8nrfvBmTgoz4manVQJ	js	202.8 KB	2026-09-24	current
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https://fossa.com/_next/static/chunks/9940-8e75e…pl_EgT7RWX1JK8nrfvBmTgoz4manVQJ	js	13.3 KB	2026-09-24	current
https://fossa.com/_next/static/chunks/3a0efb3d-d…pl_EgT7RWX1JK8nrfvBmTgoz4manVQJ	js	204.8 KB	2026-09-24	current
https://fossa.com/_next/static/chunks/app/global…pl_EgT7RWX1JK8nrfvBmTgoz4manVQJ	js	5.1 KB	2026-09-24	current
https://fossa.com/_next/static/chunks/1299-75c75…pl_EgT7RWX1JK8nrfvBmTgoz4manVQJ	js	8.4 KB	2026-09-24	current
https://fossa.com/_next/static/chunks/1398-fa31e…pl_EgT7RWX1JK8nrfvBmTgoz4manVQJ	js	19.7 KB	2026-09-24	current
https://fossa.com/_next/static/chunks/main-app-7…pl_EgT7RWX1JK8nrfvBmTgoz4manVQJ	js	528 B	2026-09-24	current
https://fossa.com/_next/static/chunks/6209-dae44…pl_EgT7RWX1JK8nrfvBmTgoz4manVQJ	js	169.9 KB	2026-09-24	current
https://fossa.com/_next/static/chunks/4686d41f-d…pl_EgT7RWX1JK8nrfvBmTgoz4manVQJ	js	169 KB	2026-09-24	current

Timeline

One entry per crawl, newest first, with what changed since the crawl before: libraries, identifiers, third-party hosts and files. Historical versions stay viewable because the stored chunks are shared between versions, never copied.

2026-10-02 first crawl

5 pages, 61 files, 6.8 MB; 25 libraries, 2 identifiers, 29 third-party hosts
25 libraries added
- gtm
- @ant-design/x 2.9.0
- @inkeep/cxkit-js 0.5.119
- @clerk/ui 1.34.0
- @moveo-ai/web-client 0.117.0
- @joyfill/components 4.0.0-rc26
- mori-chat-widget 2.0.49
- spectorjs 0.9.33
- @marimo-team/frontend 0.25.0
- @desivocal/agents-cdn 1.0.21
- posthog-js 1.434.12
- @perceptimagery/sprie-widget 1.3.3015
- and 13 more
2 identifiers added
- GTM-MR3C3W7 Google Tag Manager container
- 2vTHlibbzjKN8zyTTHEfrzfBUQ1 Segment write key
30 third-party hosts added
- www.googletagmanager.com
- www.youtube.com
- plug-platform.devrev.ai
- cdn.statuspage.io
- react.dev
- www.w3.org
- yandex.com
- sentry.io
- app.posthog.com
- us.i.posthog.com
- us.posthog.com
- app.cal.com
- and 18 more
61 files added

Questions about fossa.com

How does PageSourceSearch know what fossa.com is built with?: From the site's own source code. The crawler stores the exact bytes of its pages and first-party scripts; the libraries are recognised by fingerprinting that code against known releases, the identifiers are read out of the tag snippets, and the third-party hosts are the script, iframe and stylesheet sources in the HTML and the absolute URLs inside the scripts. Nothing is inferred from headers or guessed.
How far back does the history of fossa.com go?: To the first crawl the timeline lists. Every crawl records what the site looked like; when a file's content changes, its earlier version stays viewable because the stored chunks are never deleted, only mapped. A crawl that finds a file unchanged adds no copy.
Can I see an older version of a script from fossa.com?: Yes. In the stored files list, every date under a file opens the version that was live at that crawl, with the same viewer as the current one. The raw bytes can be downloaded from there.
Which other websites use the same tracking IDs as fossa.com?: Each identifier links to its reverse lookup, the list of every site in the index whose source carries the same id: the sites one analytics property or tag manager container is shared across.

Look up another site, browse sites by tracking ID, third-party host or technology. Site owners: see the crawler page for how stored pages are removed.