How does PageSourceSearch know what eventcatalog.dev 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 eventcatalog.dev 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 eventcatalog.dev?

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 eventcatalog.dev?

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

eventcatalog.dev

Built with react 3.4.2, gtag, @wix/design-system 1.328.0, swagger-ui-dist 5.33.0, @inkeep/cxkit-js 0.5.119, @feathery/react 2.96.0, stripe-js 0.0.1, @reachfive/identity-ui 2.1.0, @govtechsg/sgds-web-component 3.28.0, @cognigy/webchat 3.50.0, paymob-pixel 1.2.7, @embedpdf/snippet 2.15.1 and more. 5 pages and 201 stored files, last crawled 2026-10-03.

rank 1,964,320 22 libraries 1 identifier 107 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
react	3.4.2	2026-10-03
gtag		2026-10-03
@wix/design-system	1.328.0	2026-10-03
swagger-ui-dist	5.33.0	2026-10-03
@inkeep/cxkit-js	0.5.119	2026-10-03
@feathery/react	2.96.0	2026-10-03
stripe-js	0.0.1	2026-10-03
@reachfive/identity-ui	2.1.0	2026-10-03
@govtechsg/sgds-web-component	3.28.0	2026-10-03
@cognigy/webchat	3.50.0	2026-10-03
paymob-pixel	1.2.7	2026-10-03
@embedpdf/snippet	2.15.1	2026-10-03
@vitest/utils	5.0.2	2026-10-03
@collectionspace/cspace-public-browser	4.0.0	2026-10-03
cobrowse-sdk-js	3.28.7	2026-10-03
@inkeep/agents-ui-js-cloud	0.17.8	2026-10-03
tia-gpc-widget	3.1.1	2026-10-03
@percy.ai/hvs-funnel-overlay	0.5.13	2026-10-03
@chainlink/cl-search-frontend	0.13.2	2026-10-03
@progress/kendo-date-math	1.5.17	2026-10-03
@wix/image	1.454.0	2026-10-03
swr	2.5.1	2026-09-25

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 Analytics 4 measurement id (Google)	G-NGSDGQK7V1	view source

Third-party hosts

Hosts outside eventcatalog.dev 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
ai-sdk.dev	connect	view source
ai.google.dev	connect	view source
api.eventcatalog.cloud	connect	view source
api.example.com	connect	view source
api.slack.com	connect	view source
apievangelist.com	connect	view source
app.eventcatalog.studio	connect	view source
astro.build	connect	view source
auth0.com	connect	view source
authjs.dev	connect	view source
avatars.githubusercontent.com	connect	view source
aws.amazon.com	connect	view source
c4model.com	connect	view source
calendly.com	connect	view source
catalog.example.com	connect	view source
claude.ai	connect	view source
cloud.google.com	connect	view source
creativecommons.org	connect	view source
current.confluent.io	connect	view source
datatracker.ietf.org	connect	view source
developer.mozilla.org	connect	view source
developers.miro.com	connect	view source
discord.com	connect	view source
discord.gg	connect	view source
docs.astro.build	connect	view source
docs.aws.amazon.com	connect	view source
docs.confluent.io	connect	view source
docs.nats.io	connect	view source
docs.tibco.com	connect	view source
docusaurus.io	connect	view source
draw.io	connect	view source
eda-visuals.boyney.io	connect	view source
en.wikipedia.org	connect	view source
engineering.nike.com	connect	view source
eurostar.com	connect	view source
eventcatalog.cloud	connect	view source
eventcatalog.studio	connect	view source
eventmodeling.org	connect	view source
example.com	connect	view source
github.com	connect	view source
github.example.com	connect	view source
gov.uk	connect	view source
gravitee.io	connect	view source
grpc.io	connect	view source
heroicons.com	connect	view source
hookdeck.com	connect	view source
host.docker.internal	connect	view source
icepanel.io	connect	view source
ico.org.uk	connect	view source
kafka.apache.org	connect	view source
learn.microsoft.com	connect	view source
mercure.rocks	connect	view source
miro.com	connect	view source
modelcontextprotocol.io	connect	view source
openai.com	connect	view source
oso.sh	connect	view source
particular.net	connect	view source
payfit.com	connect	view source
projectcor.com	connect	view source
pulsar.apache.org	connect	view source
raw.githubusercontent.com	connect	view source
reactjs.org	connect	view source
redis-doc-test.readthedocs.io	connect	view source
s.icepanel.io	connect	view source
schema.org	connect	view source
semver.org	connect	view source
solace.com	connect	view source
stripe.com	connect	view source
supabase.com	connect	view source
support.example.com	connect	view source
swagger.io	connect	view source
tailwindcss.com	connect	view source
tui.co.uk	connect	view source
twitter.com	connect	view source
unpkg.com	connect	view source
us.i.posthog.com	connect	view source
webllm.mlc.ai	connect	view source
webrtc.org	connect	view source
windsurf.dev	connect	view source
www.airtime.com	connect	view source
www.americanlogistics.com	connect	view source
www.anthropic.com	connect	view source
www.apicur.io	connect	view source
www.asyncapi.com	connect	view source
www.boyney.io	connect	view source
www.cursor.com	connect	view source
www.eventcatalog.studio	connect	view source
www.everquote.com	connect	view source
www.flipdish.com	connect	view source
www.googletagmanager.com	script	view source
www.gravitee.io	connect	view source
www.linkedin.com	connect	view source
www.marksandspencer.com	connect	view source
www.mazda.co.uk	connect	view source
www.motorway.co.uk	connect	view source
www.oracle.com	connect	view source
www.prisma-capacity.eu	connect	view source
www.rfc-editor.org	connect	view source
www.tibco.com	connect	view source
www.ticketmaster.co.uk	connect	view source
www.transfergo.com	connect	view source
www.w3.org	connect	view source
www.youtube.com	connect	view source
xregistry.io	connect	view source
your-catalog.example.com	connect	view source
your-tenant.auth0.com	connect	view source
zeromq.org	connect	view source

Stored pages and scripts

The newest stored version of each file, newest first@if (p.FilesTruncated) { (the 500 newest of 201) }. 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
https://www.eventcatalog.dev/assets/js/e38a4617.78201a80.js	js	12.6 KB	2026-10-03	current
https://www.googletagmanager.com/gtag/js?id=G-NGSDGQK7V1	js library	not fetched	2026-10-03	current
https://www.eventcatalog.dev/assets/js/efd154ad.df633ab3.js	js	511 B	2026-10-03	current
https://www.eventcatalog.dev/assets/js/5c55300d.caed1e95.js	js	4.4 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/17021e59.5211c341.js	js	3.3 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/22d45592.902dd842.js	js	699 B	2026-10-03	current
https://www.eventcatalog.dev/assets/js/77209749.9ce73030.js	js	20.2 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/b4c2cfd1.84bde909.js	js	34.3 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/18da0a77.0d791ba4.js	js	12.3 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/7fcc4b52.b58a0071.js	js	581 B	2026-10-03	current
https://www.eventcatalog.dev/assets/js/17afd735.bb88cba9.js	js	14.9 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/9e95cd96.49e255d6.js	js	4.1 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/73b37141.a1b71078.js	js	4.5 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/c800b7d1.512e2512.js	js	690 B	2026-10-03	current
https://www.eventcatalog.dev/assets/js/36371922.04e63603.js	js	10.2 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/068b56ef.dab09ad9.js	js	6.3 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/ed8091c3.cda917e6.js	js	9.6 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/6eda5c17.b4998d21.js	js	14 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/d03e55c7.ef1c170e.js	js	11.4 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/e57c1c7e.7c039bc3.js	js	3.8 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/5c8f54fe.5f9aa101.js	js	25 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/1afb476b.ca062155.js	js	5.1 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/4d4176b9.2fc8b66c.js	js	3.3 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/8f1a60ff.ec6d7b54.js	js	11 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/912358d3.8d6f9a37.js	js	6.7 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/38ec3d4d.aa3fd935.js	js	12.4 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/2b3bf51d.3021ea2b.js	js	19.3 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/57ca7e63.bd0b66d3.js	js	11.8 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/94c75fa9.537d36f2.js	js	15.4 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/1d3ab80e.64d03f9d.js	js	3.4 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/0a90df1d.7377b1b5.js	js	21.1 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/471bad34.e6467a18.js	js	14.5 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/1b37c31c.90a3f22d.js	js	11 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/c1fa2b58.00d6b616.js	js	3.4 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/be4ac560.2617e699.js	js	3.7 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/4910f4e0.b3615e00.js	js	25.3 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/84f9d2a2.f6d48b76.js	js	5.3 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/5cdc6993.53e5d6b4.js	js	6.5 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/63525d4e.c00d23d3.js	js	3 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/e2182550.97945ad4.js	js	3.7 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/57924521.7d66a41f.js	js	16.1 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/cebafb25.458945c2.js	js	709 B	2026-10-03	current
https://www.eventcatalog.dev/assets/js/66122dff.7f8d30a3.js	js	6.7 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/8e960fd2.af3733ed.js	js	8.2 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/c16d50b6.a0348d8c.js	js	4.2 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/0901ff30.354e3077.js	js	8.7 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/714deb30.c0fe455d.js	js	4.2 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/3bc2a7d6.af0d64a7.js	js	4.4 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/98d4c3cd.fbe32b5d.js	js	3.9 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/5a5c3be8.d153beb7.js	js	6.5 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/4105193e.b75d7680.js	js	574 B	2026-10-03	current
https://www.eventcatalog.dev/assets/js/ade0b00b.b2b41267.js	js	5.7 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/fb7d424e.18bfa552.js	js	4.8 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/b802bd88.882cfaa9.js	js	573 B	2026-10-03	current
https://www.eventcatalog.dev/assets/js/e7b426cc.2ed98e04.js	js	16.3 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/9fe5705d.9414aaf0.js	js	710 B	2026-10-03	current
https://www.eventcatalog.dev/assets/js/57cc3799.a34817d4.js	js	12.5 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/5497ae8c.d1aa2627.js	js	588 B	2026-10-03	current
https://www.eventcatalog.dev/assets/js/a3994675.5d9cf35b.js	js	15.8 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/0c0bbc49.09917993.js	js	3.6 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/1e232dff.e3151e74.js	js	14.9 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/76283d64.44c62d08.js	js	6.1 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/94facd99.5d69401f.js	js	602 B	2026-10-03	current
https://www.eventcatalog.dev/assets/js/d8de4347.fa0b30b6.js	js	3.8 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/6805f96c.3420bf27.js	js	28.9 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/1ba135e1.fd2673e1.js	js	13.6 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/afdb1b9b.dbb1fac0.js	js	12.1 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/ea4aeb9a.aeffa04c.js	js	20.8 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/db6e6c7e.4776eac7.js	js	19.1 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/32414610.1bbabe44.js	js	5.8 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/d51b8c0e.3f4855ba.js	js	14.6 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/c341e6e5.bd1411b9.js	js	504 B	2026-10-03	current
https://www.eventcatalog.dev/assets/js/53a0a831.5f1006bd.js	js	9.5 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/3cd70b8a.6e959b68.js	js	9.8 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/d41e406a.5f03371b.js	js	3.6 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/8068860c.110eddbe.js	js	16.3 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/a7a12e47.8b41bc2a.js	js	5.1 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/5b093e2a.a08bae8b.js	js	12.6 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/9efff790.75964c12.js	js	11.8 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/ac9a3d85.9c1d0f8d.js	js	10 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/c1d801e0.776f5de6.js	js	6.7 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/a141e4e3.31530762.js	js	6.1 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/40011a75.f91b706c.js	js	504 B	2026-10-03	current
https://www.eventcatalog.dev/assets/js/83f17fdf.be58e1df.js	js	17.5 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/c33a9960.0bdf14dc.js	js	10.1 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/f9f0cf34.e67fb3de.js	js	5.9 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/ffd08eb2.fca76f7f.js	js	579 B	2026-10-03	current
https://www.eventcatalog.dev/assets/js/f3f8fc44.8a3fd6c3.js	js	620 B	2026-10-03	current
https://www.eventcatalog.dev/assets/js/677fdd57.c094df96.js	js	13.3 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/4811644e.38e7c4ca.js	js	572 B	2026-10-03	current
https://www.eventcatalog.dev/assets/js/291a7b4d.7d3629ed.js	js	15.8 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/f45226e7.5566dfaf.js	js	10.4 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/1722a606.6f07d3fa.js	js	8.9 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/5e95c892.16df2631.js	js	381 B	2026-10-03	current
https://www.eventcatalog.dev/assets/js/141e8a6b.b8fdb8ca.js	js	8.8 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/806642d4.e3989800.js	js	574 B	2026-10-03	current
https://www.eventcatalog.dev/assets/js/93a1b7db.bc2c149e.js	js	4.6 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/8ea09047.7a3c3043.js	js	496 B	2026-10-03	current
https://www.eventcatalog.dev/assets/js/fbc5b879.d608ce9e.js	js	3.6 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/12d0d5f8.f4a54ff3.js	js	18.2 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/15b71869.33c9f8c6.js	js	12.4 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/186b9862.d4c1948e.js	js	572 B	2026-10-03	current
https://www.eventcatalog.dev/assets/js/33f44c91.c96879ff.js	js	5.1 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/e4b04ddf.16e2da73.js	js	16.6 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/f4a4d2ee.1b112b13.js	js	5 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/ee50fbc7.ea8c2984.js	js	5.2 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/7a06a9fb.1f5ef12f.js	js	667 B	2026-10-03	current
https://www.eventcatalog.dev/assets/js/dd199cc7.2c127b91.js	js	16.2 KB	2026-10-03	current
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https://www.eventcatalog.dev/assets/js/495c4d2a.2ab3cf10.js	js	13.9 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/023ce279.709b2570.js	js	9.4 KB	2026-10-03	current
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https://www.eventcatalog.dev/assets/js/b9af34b8.efc6ad5d.js	js	7.6 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/5a6c0fce.bdb49a85.js	js	13.1 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/6539fa40.abbd2c66.js	js	3.6 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/d223af56.3aa7dbaa.js	js	5.1 KB	2026-10-03	current
https://www.eventcatalog.dev/assets/js/721f1507.9dc37184.js	js	17.7 KB	2026-10-03	current
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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.

2026-10-03 first crawl

5 pages, 201 files, 3.3 MB; 22 libraries, 1 identifier, 107 third-party hosts
22 libraries added
- gtag
- @vitest/utils 5.0.2
- cobrowse-sdk-js 3.28.7
- @percy.ai/hvs-funnel-overlay 0.5.13
- @embedpdf/snippet 2.15.1
- @govtechsg/sgds-web-component 3.28.0
- @wix/design-system 1.328.0
- @progress/kendo-date-math 1.5.17
- @inkeep/cxkit-js 0.5.119
- @chainlink/cl-search-frontend 0.13.2
- @inkeep/agents-ui-js-cloud 0.17.8
- @cognigy/webchat 3.50.0
- and 10 more
1 identifier added
- G-NGSDGQK7V1 Google Analytics 4 measurement id
107 third-party hosts added
- www.googletagmanager.com
- www.w3.org
- eventcatalog.studio
- github.com
- www.linkedin.com
- www.youtube.com
- eda-visuals.boyney.io
- docusaurus.io
- discord.com
- reactjs.org
- avatars.githubusercontent.com
- claude.ai
- and 95 more
201 files added

Questions about eventcatalog.dev

How does PageSourceSearch know what eventcatalog.dev 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 eventcatalog.dev 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 eventcatalog.dev?: 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 eventcatalog.dev?: 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.