Leading Enterprise Java Web Framework | ZK

ZK - Open Source Java Web Framework Login Search

• Products

  CORE FRAMEWORK

  ZK Framework An open source web UI framework for speedy development in Java

  FEATURED COMPONENTS

  VIEW ALL ZK Charts Hundreds of stunning and interactive charting for your ZK application Keikai Spreadsheet A component for bringing Excel-like functionality into your web application ZK Theme Pack 20+ ready-to-use modern themes for beautifying your ZK application ZK Pivottable An exceptional data analysis and summarization component for pivoting

  TOOLS

  ZATS Test A testing suite for creating automated unit tests for your ZK application ZK Studio A productivity tool for developing ZK application in Eclipse IDE ZK IntelliJ Plugin A productivity tool for developing ZK application in IntelliJ IDE
• Get Started

  EXPLORE ZK

  ZK Demo Interactive demos with source code helping you to explore the ZK power Build your 1st ZK App An example project guiding you to get your first ZK app up and running

  RESOURCES

  ZK Forum ZK Sandbox ZK Downloads
• Documentation

  LEARN ZK

  ZK Documentation A collection of ZK tutorials, references, smalltalks and Javadocs

  RESOURCES

  ZK Essentials ZK References ZK Javadocs Small Talks Blog
• Support

  GET HELP

  Support Information on the what services we offer and how you can get supported Training Information on public, private and custom training sessions Forum A place to interact with other ZKers and share your thoughts

  RESOURCES

  Premium downloads ZK@Github
• About

  MORE ABOUT ZK

  About Our story, history and leadership Pricing Information on product pricing and the ordering process

  MORE ABOUT ZK

  Why ZK EE View the enterprise features for your mission critical projects Contact Office location and contact information

Login We use cookies to ensure that we give you the best experience on our website. Got it!

Enterprise. Trusted. Established.

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

Demo Get Started 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. Learn more 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. Learn more 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. Learn more 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. Learn more 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. Learn more News Docs update: Turn Existing HTML Layouts into ZK Pages with Minimal Effort Dec 30, 2025 ✨Happy Holidays from ZK Team Dec 18, 2025 Featured ZK & Keikai Partner - Alex K Dec 12, 2025 Releases ZK 10.2.1 Jul 07, 2025 ZK Charts 12.2.0.0 May 07, 2025 ZK Calendar 3.2.0 Apr 08, 2025 ZK CKEditor 4.21.0.0 May 09, 2023 Articles We Tested Context7 With ZK Documentation: Here's What We Learned Oct 20, 2025 ZK Browser-kit Series: ClipboardHelper - Solving Real-World Data Capture Challenges Sep 23, 2025 [Case Study] ZK x Immediando Sep 02, 2025

ZK Enterprise Package

Everything you need to deliver more than expected.

EXPLORE ZK EE

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

EXPLORE ZK EE Powered by Quire