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Pricing

ZK Framework is offered in 3 editions, CE (Community), PE (Professional) and EE (Enterprise). CE is open and free under LGPL for all projects. ZK PE and EE come with advanced features, better performance, and professional support to back you up in creating your mission critical applications. The Professional and Enterprise commercial packages are offered on a per developer basis with details outlined in the table below.
To request a quotation or obtain more information on ZK licensing and pricing, please contact us.
ZK Core
ZK Tools
ZK Theme
ZK Add-ons
License
Support and
Premium
Resources

Community

Free
Per developer per year
ZK Core
Best open source Java Web Framework.
  • MVC/MVVM support
  • Server+Client Fusion architecture
  • Cross-browser & IDE support
  • Internationalization
  • 200+ ready-to-use components, including Input, Layout, Form, Grid, Tree, Window, Menu, Multimedia...
See All Features
ZK Tools
  • ZK Studio
ZK Themes
  • Default themes: Iceblue, Breeze, Sapphire and Silvertail
License
LGPL
Support and PremiumResources
  • Access to ZK Forum
  • Access to all documentation

Professional

$899
Per developer per year
ZK Core
Everything in CE, and also.
  • Grouping/Master-detail
  • ZK JasperReports
  • ZK JFreeCharts
  • xml generator
  • Comet push
  • More professional components such as advanced grids, hierarchy, colorpicker, captcha, fisheye menu
See All Features
ZK Tools
  • ZK Studio
ZK Themes
  • Default themes: Iceblue, Breeze, Sapphire and Silvertail
License
Commercial (no open source hassle)
Support and PremiumResources
Everything in CE, and
  • Dedicated support channel
  • 5 hours of remote support
  • 2 biz day response time
  • Prioritized fixes
  • Regular maintenance updates
  • Access to major version upgrade
  • Annual royalty-free runtime distribution

Enterprise

Contact us
Per developer per year
ZK Core
Everything in PE, and also.
  • Performance Boost: on-demand client widget rendering, on-demand model rendering, MVVM performance optimization, Client MVVM, Biglistbox
  • Server-side memory optimization, Desktop & component reuse
  • Stateless Components for building cloud-native apps
  • Built-in Websocket, servlet 3 async comet
  • Responsive components & advanced touch experiences
  • WCAG web accessibility support
  • More enterprise components, such as navbar, chosenbox, portallayout, kanban, cascader, etc
See All Features
ZK Tools
  • ZK Studio
  • ZATS testing suite
ZK Themes
  • Default themes: Iceblue, Breeze, Sapphire and Silvertail
  • ZK Theme Pack with 23 modern themes
  • ZK Atlantic Theme
  • WCAG-compatible themes
ZK Extensions
  • ZK Calendar
  • ZK GoogleMaps
  • ZK Spring (ZK Spring Core & ZK Spring Security)
License
Commercial (no open source hassle)
Support and PremiumResources
Everything in PE, and
  • Dedicated support channel
  • 10 hours of remote support
  • 1 biz day response time
  • Prioritized fixes
  • Custom patches
  • Regular maintenance updates
  • Access to major version upgrade
  • Annual royalty-free runtime distribution

ZK Extension Options

The following extensions and add-on components can be added to the core ZK Framework. However, please note that some extensions are already included in existing packages, for example, ZK JSP Tags, ZK Spring, ZK Calendar, ZK Google Maps and ZK Theme Pack are included in ZK Enterprise Package already. Please check the table above before you purchase or download these extensions or add-ons. If you wish to purchase an add-on, please contact us at info@zkoss.org.


ZK Extensions

Add on price / Per developer per Year
ZK JSP Tags2
$199
ZK Spring2 3
  • ZK Spring Core
  • ZK Spring Security
  • ZK Spring JPA
  • ZK Spring Annotation
$399

ZK Components

Add on price / Per developer per Year
ZK Charts1Most Popular
$429
ZK Calendar2
$199
ZK Google Maps2
$199
ZK Theme Pack2
$349
Keikai Spreadsheet EE4
Contact
ZK Pivottable
Contact
ZK CKEditor 5 Wrapper
Contact
Notes
  • 1.
    ZK Charts is an optimized add-on integrating ZK and Highcharts. No separate license is required from Highsoft.
  • 2.
    ZK JSP Tags, ZK Theme Pack, ZK Spring, ZK Calendar and ZK Google Maps can be purchased by CE and PP customers. These items are already included in Enterprise Package.
  • 3.
    ZK Spring Web Flow was removed since ZK Spring 4.0.
  • 4.
    ZK Spreadsheet is now Keikai Spreadsheet.

Frequently Asked Questions

Can I try out ZK EE before purchasing it?
What is the difference between ZK CE and ZK EE?
Can I have both CE and EE developers on the same project?
Do you provide custom licensing?
How can I purchase a ZK license? (payment method, delivery time, reseller)

Still have more questions? Contact us.