WebAssembly
Programming languages
Visit webassembly.org
WebAssembly (abbreviated Wasm) is a binary instruction format for a stack-based virtual machine. Wasm is designed as a portable compilation target for programming languages, enabling deployment on the web for client and server applications.
Lead List Exporter
305 live WebAssembly sites, ready to export.
That's how many WebAssembly websites are in VersionDB right now, each with its full tech stack, contact details, and social profiles.
Pick a ready-made template, or build your own filters in the Lead List Exporter and pay only for the rows you export.
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WebAssembly companies in the United States
Every WebAssembly website we detected in the US.
Companies with personnel emails
Only sites where a personal, company-hosted email was found.
Decision makers on LinkedIn
Sites with at least one personnel LinkedIn profile.
Top 100,000 WebAssembly sites by traffic
Start with the highest-traffic end of the dataset.
Sites on a .com domain
Limit results to WebAssembly websites on .com domains.
Companies with phone numbers
Only sites where an organisation phone number was found.
Complementary Technologies
WebAssembly Complementary Technologies
Technologies frequently found with WebAssembly.
Most Frequent Complementary Tech
HSTS
165
HTTP/3
113
Nginx
103
Cloudflare
86
Cloudflare Browser Insights
42
Caddy
29
Fastly
23
GitHub Pages
23
Varnish
23
jQuery
23
Live Websites
Websites Using WebAssembly
Live sites we caught running WebAssembly in the wild, straight from the latest crawl.
| Domain | Server Location | ASN | Crawl Date |
|---|---|---|---|
| cazmusw.ru | ๐ท๐บ Russia | ArtPlanet LLC | July 28, 2026 |
| catsbay.space | Unknown | Cloudflare, Inc. | July 28, 2026 |
| sa05.tech | ๐ธ๐ช Sweden | Node Host Limited | July 28, 2026 |
| rolder.net | ๐ท๐บ Russia | Yandex.Cloud LLC | July 27, 2026 |
| sehomelab.sbs | ๐ท๐บ Russia | Ztv Corp LLC | July 27, 2026 |
| killershop.shop | ๐ฉ๐ช Germany | Kyonix Networks Limited | July 27, 2026 |
| magnitvpn.org | ๐จ๐ฟ Czech Republic | Jsc timeweb | July 27, 2026 |
| febetvip.pro | Unknown | Cloudflare, Inc. | July 27, 2026 |
| quadoff.top | ๐ซ๐ฎ Finland | Hetzner Online GmbH | July 27, 2026 |
| gogs.ink | ๐ณ๐ฑ Netherlands | RoyaleHosting BV | July 27, 2026 |
Identifiers
Top WebAssembly Identifiers
Who is using WebAssembly and where: top five by detected sites.
Technology
HSTS
165
HTTP/3
113
Nginx
103
Cloudflare
86
Cloudflare Browser Insights
42
Language
English
155
Chinese
61
Portuguese
20
Vietnamese
7
Afrikaans
5
ASN
Cloudflare, Inc.
78
Amazon.com, Inc.
31
Fastly, Inc.
22
CTG Server Limited
16
Centroid Networking Co., Ltd. desc: 7F.-3, NO.119, SEC. 2, MINSHENG E. RD., ZHONGSHAN DIST.
10
TLD
com
121
ru
28
app
21
org
14
net
12
Country
Unknown
88
United States
51
Russia
35
China
21
Germany
20
Deep Dive
Most Frequent WebAssembly Identifiers and Complementary Tech
Most frequently encountered identifiers for WebAssembly and its complementary technologies.
| Technology | Sites |
|---|---|
| HSTS | 165 |
HTTP/3 | 113 |
Nginx | 103 |
Cloudflare | 86 |
|
Cloudflare Browser Insights | 42 |
Caddy | 29 |
Fastly | 23 |
GitHub Pages | 23 |
Varnish | 23 |
jQuery | 23 |
Node.js | 22 |
Amazon Web Services | 20 |
Google Analytics | 19 |
cdnjs | 18 |
ECharts | 16 |
Ubuntu | 15 |
jsDelivr | 14 |
Google Tag Manager | 13 |
PHP | 13 |
Amazon CloudFront | 12 |
MySQL | 11 |
WordPress | 11 |
Bootstrap | 10 |
|
jQuery Migrate | 10 |
OpenResty | 9 |
| Language | Sites |
|---|---|
| English | 155 |
| Chinese | 61 |
| Portuguese | 20 |
| Vietnamese | 7 |
| Afrikaans | 5 |
| Southern Sotho | 5 |
| Welsh | 3 |
| German | 3 |
| Swahili | 3 |
| Catalan | 1 |
| Esperanto | 1 |
| Indonesian | 1 |
| Italian | 1 |
| Korean | 1 |
| Latin | 1 |
| Lithuanian | 1 |
| Mongolian | 1 |
| Mฤori | 1 |
| Dutch | 1 |
| Norwegian Nynorsk | 1 |
| Russian | 1 |
| Swedish | 1 |
| Turkish | 1 |
| Xhosa | 1 |
| Zulu | 1 |
| ASN | Sites |
|---|---|
| Cloudflare, Inc. | 78 |
| Amazon.com, Inc. | 31 |
| Fastly, Inc. | 22 |
| CTG Server Limited | 16 |
| Centroid Networking Co., Ltd. desc: 7F.-3, NO.119, SEC. 2, MINSHENG E. RD., ZHONGSHAN DIST. | 10 |
| Hangzhou Alibaba Advertising Co.,Ltd. | 9 |
| Hetzner Online GmbH | 9 |
| Unknown | 7 |
| Meteverse Limited. | 6 |
| Zhejiang Taobao Network Co.,Ltd | 6 |
| Hostkey B.v. | 5 |
| Jsc timeweb | 5 |
| Akamai Connected Cloud | 4 |
| Chinanet | 3 |
| DigitalOcean, LLC | 3 |
| FDCservers.net | 3 |
| First Server Limited | 3 |
| Google LLC | 3 |
| Microsoft Corporation | 3 |
| OVH SAS | 3 |
| Play2go International Limited | 3 |
| U1 Digital Services Ltd | 3 |
| netcup GmbH | 3 |
| Alibaba Cloud Singapore Private Limited | 2 |
| Alibaba US Technology Co., Ltd. | 2 |
| Beget LLC | 2 |
| FranTech Solutions | 2 |
| Global Connectivity Solutions Llp | 2 |
| HostPapa | 2 |
| Servers Tech Fzco | 2 |
| Skycloud Computing co., Ltd. | 2 |
| Yandex.Cloud LLC | 2 |
| ACE | 1 |
| AdminVPS OOO | 1 |
| Aeza Group LLC | 1 |
| Alfahost LLC | 1 |
| Anton Levin | 1 |
| ArtPlanet LLC | 1 |
| Baxet Group Inc. | 1 |
| Baykov Ilya Sergeevich | 1 |
| CHINA UNICOM China169 Backbone | 1 |
| CHINANET SiChuan Telecom Internet Data Center | 1 |
| Charter Communications Inc | 1 |
| China Mobile Communications Group Co., Ltd. | 1 |
| China Telecom | 1 |
| China Unicom Guangdong IP network | 1 |
| Clodo Cloud Service Co. L.L.C | 1 |
| DELUXHOST | 1 |
| Datacamp Limited | 1 |
| Ddos-guard Ltd | 1 |
| Fly.io, Inc. | 1 |
| Fornex Hosting S.L. | 1 |
| H2nexus Ltd | 1 |
| HUAWEI CLOUDS | 1 |
| Hosting technology LTD | 1 |
| Hurricane Electric LLC | 1 |
| IP-Projects GmbH & Co. KG | 1 |
| JSC Selectel | 1 |
| Kartel Ltd. | 1 |
| Kontel LLC | 1 |
| Kyonix Networks Limited | 1 |
| Liberally Network LLC | 1 |
| Nessus GmbH | 1 |
| Newserverlife LLC | 1 |
| Node Host Limited | 1 |
| RoyaleHosting BV | 1 |
| SAKURA Internet Inc. | 1 |
| SYNLINQ | 1 |
| Scalaxy B.V. | 1 |
| Senko Digital LLC | 1 |
| Serv.host Group Ltd | 1 |
| Shenzhen Tencent Computer Systems Company Limited | 1 |
| Spartan Host Ltd | 1 |
| StarHub Ltd | 1 |
| The Infrastructure Group B.V. | 1 |
| Timeweb, LLP | 1 |
| UFO Hosting LLC | 1 |
| Unified Layer | 1 |
| WAIcore Ltd | 1 |
| Ztv Corp LLC | 1 |
| cognetcloud INC | 1 |
| TLD | Sites |
|---|---|
| com | 121 |
| ru | 28 |
| app | 21 |
| org | 14 |
| net | 12 |
| io | 11 |
| online | 6 |
| xyz | 6 |
| dev | 5 |
| tech | 5 |
| club | 4 |
| cn | 4 |
| pro | 4 |
| site | 4 |
| cc | 3 |
| fun | 3 |
| live | 3 |
| me | 3 |
| vip | 3 |
| ai | 2 |
| ca | 2 |
| cloud | 2 |
| co | 2 |
| info | 2 |
| space | 2 |
| store | 2 |
| tv | 2 |
| uk | 2 |
| 44 | 1 |
| ac | 1 |
| biz | 1 |
| cfd | 1 |
| de | 1 |
| digital | 1 |
| dog | 1 |
| eu | 1 |
| fit | 1 |
| global | 1 |
| holdings | 1 |
| ink | 1 |
| is | 1 |
| jp | 1 |
| kr | 1 |
| mn | 1 |
| network | 1 |
| ng | 1 |
| nz | 1 |
| ph | 1 |
| sbs | 1 |
| select | 1 |
| shop | 1 |
| software | 1 |
| tips | 1 |
| top | 1 |
| work | 1 |
| Country | Sites |
|---|---|
| Unknown | 88 |
| ๐บ๐ธ United States | 51 |
| ๐ท๐บ Russia | 35 |
| ๐จ๐ณ China | 21 |
| ๐ฉ๐ช Germany | 20 |
| ๐ธ๐ฌ Singapore | 18 |
| ๐น๐ผ Taiwan | 12 |
| ๐ฎ๐ด British Indian Ocean Territory | 11 |
| ๐ณ๐ฑ Netherlands | 7 |
| ๐ซ๐ฎ Finland | 5 |
| ๐ญ๐ฐ Hong Kong | 5 |
| ๐จ๐ฆ Canada | 4 |
| ๐ฌ๐ง United Kingdom | 3 |
| ๐ฒ๐ช Montenegro | 3 |
| ๐ฆ๐ฎ Anguilla | 2 |
| ๐จ๐ด Colombia | 2 |
| ๐ซ๐ท France | 2 |
| ๐ฏ๐ต Japan | 2 |
| ๐ธ๐ช Sweden | 2 |
| ๐น๐ป Tuvalu | 2 |
| ๐ฆ๐ช United Arab Emirates | 1 |
| ๐ง๐ฌ Bulgaria | 1 |
| ๐ง๐ท Brazil | 1 |
| ๐จ๐ฟ Czech Republic | 1 |
| ๐ช๐ธ Spain | 1 |
| ๐ฐ๐ท South Korea | 1 |
| ๐ฐ๐ฟ Kazakhstan | 1 |
| ๐ฑ๐น Lithuania | 1 |
| ๐ต๐ญ Philippines | 1 |
| ๐ต๐ฑ Poland | 1 |