6,272 websites in the live index use mod_jk as of October 2026. Download the full list of mod_jk websites with website, company, country and language.
Mod_jk is an Apache module used to connect the Tomcat servlet container with web servers such as Apache, iPlanet, Sun ONE (formerly Netscape) and even IIS using the Apache JServ Protocol. A web server waits for client HTTP requests.
tomcat.apache.org/tomcat-3.3-doc/mod_jk-howto.html
As of October 16, 2026, TechLeads detects mod_jk on 6,272 websites: 2.3% of Web server extensions detections, the 4th most-used of 12 Web server extensions technologies we track.
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Citation
TechLeads. "Companies Using mod_jk." Data as of October 16, 2026. https://techleads.fyi/technology/mod_jkHTML link
<a href="https://techleads.fyi/technology/mod_jk">Companies using mod_jk (TechLeads data)</a>Sample results for mod_jk
| Rank | Icon | Website | Title | Description | Company | Country | Language |
|---|---|---|---|---|---|---|---|
| #17,523 | Next Education | India's Leading B2B EdTech Company for K-12 Schools | Next Education is India | - | - | - | ||
| #27,311 | Tara Air | More Detail at www.plazma.com.np : United Solutions is Airline Online Reservation System Using By Almost All Airlines In Nepal. | - | - | - | ||
| #64,826 | The CrossWire Bible Society - Free Bible Software - Bringing the Gospel to a new generation | The CrossWire Bible Society is an organization with the purpose to sponser and provide a place for engineers and others to come and collaborate on free, open-source projects aimed at furthing the Kingdom of our God. We are also a resource pool to other Bible societies that can | - | - | - | ||
| #80,608 | Laryngoscopes | US | Teleflex | - | - | - | - | ||
| #100,000 | De technische groothandel voor installateurs | Technische Unie | Installatiemateriaal nodig? De Technische Groothandel met ✓ Grootste Assortiment Installatiemateriaal ✓ Snel Bezorgd ✓ Besteld voor 20:00, Morgen Geleverd | - | NL | nl | ||
| #100,000 | Veratour | Sito Ufficiale | Miglior prezzo garantito | - | - | - | - | ||
| #100,000 | 모두의 창작을 위한 베스트 폰트 플랫폼 | 산돌구름 | - | - | - | - | ||
| #104,525 | 농민신문 | - | - | - | - | ||
| #186,241 | 비즈니스포스트 Business Post | 비즈니스포스트 BUSINESSPOST 인물중심 기업인 프로파일 경제미디어 경제신문 경제지 Who Is? | 비즈니스포스트 | KR | - | ||
| #203,049 | XOSOFT | - | - | - | - | ||
| #208,024 | 코비하우스VR | 내손안에 인테리어 | - | - | - | ||
| #235,521 | 국가대표 닭가슴살 아임닭 | 닭가슴살 브랜드. 질리지않는 20가지 맛. 완벽한 닭가슴살식단. 빠른배송 | Imdak | KR | - | ||
| #247,535 | prkorea.com | 526: Invalid SSL certificate | - | Prkorea | US | en-US | ||
| #271,564 | Unicode/XML Leningrad Codex (UXLC) | - | Tanach | US | en | ||
| #300,508 | UKPressOnline | - | Ukpressonline | GB | en | ||
| #302,823 | Go4Go | - | Go4Go | - | en | ||
| #383,685 | G-STAR 2025 | - | - | - | - | ||
| #500,000 | Tualatin Hills Park & Recreation District (THPRD) | Tualatin Hills Park & Recreation District (THPRD) connects people, parks & nature in Beaverton, Oregon. Learn about the many classes & activities we offer. | - | - | en | ||
| #500,000 | HACC, Central Pennsylvania's Community College Home Page | HACC, Central Pennsylvania | - | - | en | ||
| #500,000 | Sae.OrgWebapp | - | - | - | en | ||
| #500,000 | GeoNames | - | - | - | - | ||
| #500,000 | 한국이민재단 | Kiiptest | - | - | - | ||
| #500,000 | Greitasis kreditas, ilgalaikė paskola. Pinigai vos per keletą minučių. | Greitieji kreditai ir ilgalaikės paskolos internetu patraukliomis sąlygomis! Kreditas iki 10.000 Eur. Paskola suteikiama iki 60 mėn. | - | - | - | ||
| #500,000 | MySGI | Welcome to MySGI | - | - | - | ||
| #500,000 | PASS | 회사 업무관리 시스템 PASS를 통해 업무 효율성을 높이세요. | - | - | - |
The most-used Web server extensions technologies in the TechLeads index, by number of websites. mod_jk accounts for 2.3% of Web server extensions detections (6,272 websites).
| Technology | Websites | Share of Web server extensions |
|---|---|---|
| OpenSSL | 233,560 | 87.5% |
| mod_ssl | 6,897 | 2.6% |
| mod_perl | 6,362 | 2.4% |
| mod_wsgi | 4,100 | 1.5% |
| mod_dav | 2,724 | 1.0% |
| mod_rails | 1,870 | 0.70% |
| mod_rack | 1,870 | 0.70% |
| Shelf | 1,292 | 0.48% |
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TechLeads scans public websites and identifies mod_jk from signals in the page HTML, scripts, cookies, HTTP headers and DNS records. Website counts refresh daily; this page uses data from October 16, 2026. Counts only include websites we have scanned, so they can differ from other providers.
Complete mod_jk website dataset in CSV. One-time purchase.
Secure checkout · 7-day download accessDistribution of websites using mod_jk across countries in the TechLeads database.
| Country | Sites |
|---|---|
| Italy(IT) | 87 |
| United States(US) | 14 |
| South Korea(KR) | 11 |
| Spain(ES) | 9 |
| United Kingdom(GB) | 5 |
| Switzerland(CH) | 5 |
| Germany(DE) | 4 |
| Russia(RU) | 3 |
| Japan(JP) | 2 |
| France(FR) | 2 |
| Norway(NO) | 1 |
| Netherlands(NL) | 1 |
| Australia(AU) | 1 |
| China(CN) | 1 |
| Belgium(BE) | 1 |
| Sweden(SE) | 1 |
| Denmark(DK) | 1 |
| Ecuador(EC) | 1 |
Technologies most frequently detected on the same websites as mod_jk.
158 new sites in the last 12 weeks
Sites where we first detected mod_jk, by week (UTC, weeks start Monday). Counts follow our discovery coverage, so weekly totals can vary.
Mod_jk is an Apache module used to connect the Tomcat servlet container with web servers such as Apache, iPlanet, Sun ONE (formerly Netscape) and even IIS using the Apache JServ Protocol. A web server waits for client HTTP requests.
Our comprehensive database contains 6,272 websites using mod_jk, making it the most complete mod_jk sites list available. This mod_jk customer websites directory helps businesses detect websites using mod_jk and identify potential leads.
The largest concentrations of mod_jk websites are in IT, US, KR, based on our indexed country data.
Websites using mod_jk commonly also use Java, Apache Tomcat, Apache HTTP Server, OpenSSL, jQuery — reflecting typical mod_jk technology stacks.
Our mod_jk technology detection system scans millions of websites to identify those powered by mod_jk. This list of sites with mod_jk includes detailed information such as company names, contact details, social media profiles, and website rankings. Whether you're looking for top websites with mod_jk or exploring mod_jk adoption trends, our database provides comprehensive insights.
Each entry in our mod_jk sites list includes valuable data points: domain name, global ranking, company information, contact details, social media links. This makes it easy to detect websites using mod_jk and reach out to potential customers or partners.
Get instant access to the full list of sites with mod_jk in CSV format. Our dataset includes all 6,272 mod_jk customer websites with complete contact information, perfect for lead generation, market research, and competitive analysis. The data is regularly updated to ensure accuracy and includes the latest mod_jk powered websites.