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Enterprise. Trusted. Established.

ZK is the best open source Java framework for building enterprise web and mobile apps.

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Rapid Development
ZK users report a 4-16x productivity boost thanks to its server-centric architecture and 200+ ready-to-use components. You can focus on business logic while ZK handles the rest: UI, server-client communication, browser compatibility and network security. With a single Java team, you no longer need for separate front-end and back-end teams, saving both development time and cross-team coordination effort.
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Simply Java
ZK is renowned for "Ajax without JavaScript", enabling developers to build rich Web applications in pure Java. In addition, with programs executed at the server, developers can leverage all the Java technologies, such as Java EE and Spring, while back-end data and services are readily available.
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Enterprise-level Security
Unlike JavaScript-based solutions where client-side logic can be exposed, ZK runs all business logic on the server for stronger enterprise security. With ISO 27001 certification, regular penetration testing, and continuous CI/CD security checks, you can build with confidence on a secure foundation.
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Innovative Technology
Since our first release in 2005, ZK has been the leader in the industry: we are the 1st Java framework supporting MVVM pattern, the first PC+Mobile responsive solution that supports write once run everywhere, the first client+server fusion architecture, and the first web spreadsheet component…. Innovation is the driving force that differs us from everyone else and motivates us to be better and better each day.
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Open Source
We believe open source is the best way to build an open, secure, and trustworthy software that millions can depend on. ZK CE is freely available under the LGPL license, for both open source and commercial projects. Meanwhile ZK EE with advanced features and professional support are available for mission critical projects.
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ZK Enterprise Package

Everything you need to deliver more than expected.

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Performance

Better performance, better experience, and greater product

Features

60+ EE-exclusive features including WebSocket, WCAG, Theme Pack, and more

Support

Discuss directly with core ZK engineers to solve your questions and boost productivity

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