ZK is an open-source Java framework for building enterprise web and mobile apps.

ZK offers a core framework zk, integrations, tools, and add-on components.

Why ZK
Simply Java: Ajax without Javascript
Rapid Development: 4-16 times of productivity boost
Enterprise-level Security: no risks of exposing business logic on the client-side
Innovative Technology: first Java MVVM, server-client fusion, web spreadsheet

Popular repositories
zk - core framework
zkspringboot - zk-springboot starter project
zkspring - spring integration
zkcalendar - calendar add-on
zkckeditor - ckeditor integration
zats - testing tool
zkThemeTemplate - tool for creating custom themes

Learn ZK
Getting Started
ZK Demo
Training Videos

Community
If you have a question, join the ZK Forum and discuss with the community.

Issues
We use ZK Tracker for most of our projects. If you believe you have identified a product issue, please create an issue in our tracker.

License
ZK Framework is licensed under LGPL. For add-ons, please refer to the LICENSE file in their corresponding repositories. More about license.

Contributing to ZK
Contribution of all kinds is welcome. Please read Contributing.md in each repository.

Contact
You can contact us at info@zkoss.org or fill out the contact form.