ZK is a highly productive Java framework for building amazing enterprise web and mobile applications. It enables developers to create rich, interactive UIs using only Java — no JavaScript required. With 200+ Ajax-powered components, event-driven architecture, and support for popular technologies like Spring and Java EE, ZK makes it simple to deliver powerful and user-friendly web applications. When to Use ZK - Backend-heavy Java projects with minimal frontend skills - Enterprise apps requiring long-term stability - Data-intensive UIs with complex interaction - Quick prototypes for internal tools Why ZK - Simply Java: Ajax without Javascript - Rapid Development: build web applications 4-16 times faster - Enterprise-level Security: no risks of exposing business logic on the client-side - Innovative Technology: first Java MVVM, server-client fusion, web spreadsheet