# ZK

Java framework for building server-side web and mobile user interfaces, with components declared in ZUML markup and Ajax handled without client-side JavaScript code.


Source: https://findsoftware.frbit.cloud/zk/
Last reviewed: 2026-10-28
Listed since: 2026-10-28

## Record

### Links

- home: https://www.zkoss.org
- repository: https://github.com/zkoss/zk
- docs: https://docs.zkoss.org/

### Identity

- status: active
- maintainer: Potix Corporation
- maintainerType: company
- parent: unknown
- firstRelease: 2006
- hqCountry: unknown

### Kind

- category: framework
- hosting: java
- language: java
- runtime: jvm
- runtimeMin: jvm 11
- basedOn: unknown

### Content

- contentStore: unknown
- databases: unknown
- adminUi: unknown
- headlessApi: unknown
- templating: zuml
- i18n: unknown

### Rendering and deploy

- runsAs: always-on
- renderingModes: unknown
- installMethod: maven

### License

- licenseModel: open-core
- license: LGPL-3.0, LGPL

### Releases

- currentMajor: 10
- latestReleaseDate: 2026-07-22

### Adoption

- githubStargazers: 474
- packagistDownloads: not applicable
- npmWeeklyDownloads: not applicable
- contributors: 53
- pluginCount: unknown
- packagistMonthlyDownloads: unknown
- ecosystemsMonthlyDownloads: unknown
- httpArchiveSites: unknown
- wordpressActiveInstalls: unknown
- dependentRepos: 227
- dependentPackages: 50

### Sources

- urls: https://api.github.com/repos/zkoss/zk (read 2026-10-28)
- urls: https://api.github.com/repos/zkoss/zk (read 2026-10-28)
- urls: https://docs.zkoss.org/zk_installation_guide/quick_start (read 2026-10-28)
- maintainer: https://docs.zkoss.org/zk_installation_guide/quick_start (read 2026-10-28)
- language: https://api.github.com/repos/zkoss/zk (read 2026-10-28)
- category: https://github.com/zkoss/zk/blob/master/README.md (read 2026-10-28)
- templating: https://github.com/zkoss/zk/blob/master/README.md (read 2026-10-28)
- runtime: https://docs.zkoss.org/zk_installation_guide/new_to_java (read 2026-10-28)
- runtimeMin: https://docs.zkoss.org/zk_installation_guide/new_to_java (read 2026-10-28)
- installMethod: https://docs.zkoss.org/zk_installation_guide/create_and_run_your_first_zk_application_with_maven_archetype (read 2026-10-28)
- installMethod: https://docs.zkoss.org/zk_installation_guide/zk_background (read 2026-10-28)
- runsAs: https://docs.zkoss.org/zk_installation_guide/jetty (read 2026-10-28)
- license: https://repo1.maven.org/maven2/org/zkoss/zk/zk/10.3.0.1/zk-10.3.0.1.pom (read 2026-10-28)
- license: https://docs.zkoss.org/zk_installation_guide/maven_setup (read 2026-10-28)
- licenseModel: https://docs.zkoss.org/zk_installation_guide/maven_setup (read 2026-10-28)
- firstRelease: https://search.maven.org/solrsearch/select?q=g:org.zkoss.zk+AND+a:zk&core=gav&rows=200&wt=json (read 2026-10-28)
- currentMajor: https://repo1.maven.org/maven2/org/zkoss/zk/zk/maven-metadata.xml (read 2026-10-28)
- latestReleaseDate: https://repo1.maven.org/maven2/org/zkoss/zk/zk/10.3.0.1/ (read 2026-10-28)
- githubStargazers: https://api.github.com/repos/zkoss/zk (read 2026-10-28)
- contributors: https://api.github.com/repos/zkoss/zk/contributors (read 2026-10-28)
- dependentPackages: https://packages.ecosyste.ms/api/v1/registries/repo1.maven.org/packages/org.zkoss.zk%3Azk (read 2026-10-28)
- dependentRepos: https://packages.ecosyste.ms/api/v1/registries/repo1.maven.org/packages/org.zkoss.zk%3Azk (read 2026-10-28)

## Notes

ZK is a Java framework for building enterprise web and mobile applications. The user interface is declared in ZUML markup, and the README says Ajax works without JavaScript written by the developer. The [Maven setup guide](https://docs.zkoss.org/zk_installation_guide/maven_setup) lists the editions and the Maven repository, and applications run on a servlet application server such as Jetty or Tomcat, which the deployment pages name.

## Worth knowing

The community edition is under LGPL, while the professional and enterprise editions are premium and have a 60-day evaluation. Versions are published to Maven Central, and the GitHub repository holds one older release.

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Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Attributes are recorded, never scored; absent means unknown.
Credit, in full: FindSoftware, CC BY 4.0