| Remix4 | JQuery Accordion Menu Widget | 1 |
| East Japan Railway Company | JR East Japan Train Operation Information Push Notification App For Android | 1 |
| Oracle | JRockit | 5 |
| JS Help Desk | JS Help Desk | 2 |
| JS Help Desk | JS Help Desk – Best Help Desk & Support Plugin | 1 |
| JoomSky | JS Job Manager | 2 |
| Redwood Software | JSCAPE MFT Server | 1 |
| Bernhard Kux | JSON Content Importer | 2 |
| Unknown | JSON Content Importer | 2 |
| Starcounter-Jack | JSON-Patch | 1 |
| Dogtag | JSS | 1 |
| Siemens | JT Open | 8 |
| Siemens | JT Utilities | 32 |
| Siemens | JT2Go | 137 |
| Siemens | JTTK | 22 |
| Joris Van Montfort | JVM Gutenberg Rich Text Icons | 1 |
| Perl Crypt | JWT | 1 |
| Borland Software | J Builder | 1 |
| Joomla | J Reactions | 1 |
| Seagull Software Systems | J Walk Application Server | 1 |
| Ws-inc | J Wbem | 2 |
| Ja-elvis | Ja-elvis | 1 |
| Freebsd | Ja-xklock | 1 |
| James Barnsley | Jab Guest Book | 2 |
| Jaba | Jaba Xpress | 1 |
| Cisco | Jabber | 12 |
| Cisco | Jabber Extensible Communications Platform | 4 |
| Jabberstudio | Jabber Gadu-gadu Transport | 3 |
| Cisco | Jabber Guest | 6 |
| Cisco | Jabber Im | 1 |
| Jabber Software Foundation | Jabber Server | 2 |
| Cisco | Jabber Software Development Kit | 1 |
| Jabberstudio | Jabberd | 2 |
| Jabberd | Jabberd14 | 2 |
| Jabber | Jabberd2 | 7 |
| Jabber2 | Jabberd2 | 7 |
| Jabberd2 | Jabberd2 | 7 |
| Jabref | Jabref | 1 |
| Jackaudio | Jack2 | 1 |
| Jackdapp | Jack\'d - Gay Chat \& Dating | 1 |
| Huawei | Jackman-AL00D | 1 |
| Huawei | Jackman-L22 | 4 |
| Huawei | Jackman-l21 Firmware | 1 |
| Huawei | Jackman-l22 Firmware | 1 |
| Huawei | Jackman-l23 Firmware | 1 |
| Apache | Jackrabbit | 3 |
| Fasterxml | Jackson-databind | 67 |
| Fasterxml | Jackson-dataformat-xml | 2 |
| Fasterxml | Jackson-dataformats-binary | 1 |
| Fasterxml | Jackson-modules-java8 | 1 |
| Longino | Jacome Php-revista | 4 |
| Huawei | Jad-al50 Firmware | 1 |
| Jabberstudio | Jadc2s | 1 |
| Jadu Limited | Jadu Cms | 1 |
| Jadu | Jadu Cms For Government | 1 |
| Jadu | Jadu Galaxies | 1 |
| Jaegertracing | Jaeger Ui | 1 |
| Jaf Cms | Jaf Cms | 10 |
| Salims Softhouse | Jaf Cms | 10 |
| Xs4all | Jag | 1 |
| Isemarket | Jaguarcontrol | 1 |
| Jaguarsoft | Jaguaredit | 1 |
| Jahia | Jahia Xcm | 3 |
| Jailed Project | Jailed | 1 |
| Javier Fernandez | Jailer | 1 |
| The Eclipse Foundation | Jakarta Expression Language Implementation | 1 |
| Apache | Jakarta Slide | 2 |
| Jakcms | Jakcms | 1 |
| Jamalbates | Jamal Bates Show | 1 |
| Jambatan Pbb Semporna Project | Jambatan Pbb Semporna | 1 |
| Joomla | Jambook | 1 |
| Mambo | Jambook | 1 |
| Apache | James | 3 |
| Apache | James Server | 1 |
| Jamf | Jamf | 6 |
| Savoir-faire Linux | Jami | 2 |
| Jamit | Jamit Job Board | 3 |
| Jamit Software | Jamit Job Board | 3 |
| Jamm-media | Jamm Cms | 1 |
| Jammail | Jammail | 1 |
| Jammer Project | Jammer | 1 |
| Jamovi | Jamovi | 1 |
| Jamroom | Jamroom | 8 |
| Jamwiki | Jamwiki | 2 |
| T. Hauck | Jana Web Server | 10 |
| Janet-lang | Janet | 1 |
| Janetter | Janetter | 2 |
| Janino Project | Janino | 1 |
| TieLabs | Jannah | 2 |
| Bryce Hamrick | Janrain Capture | 2 |
| Jansson Project | Jansson | 3 |
| Meetecho | Janus | 11 |
| Jaow | Jaow | 1 |
| Ntt-bp | Japan Connected-free Wi-fi | 3 |
| Yahoo | Japan Shopping | 1 |
| Japanese Php Gallery Hosting | Japanese Php Gallery Hosting | 1 |
| Njstar | Japanese Word Processor | 1 |
| Unknown | Japanized For WooCommerce | 2 |
| Shoheitanaka | Japanized For WooCommerce | 2 |
| Jappix Project | Jappix | 1 |
