Vaadin 25.1 makes Copilot free, brings production-ready Signals, open-sources browserless UI testing, and adds new components and AI integration APIs.

Vaadin is a platform for building web applications with Java. Readers can learn about Java web development, UI components, and web application architecture. With tutorials, documentation, and community support, Vaadin offers resources for developers interested in creating modern and scalable web applications.

Vaadin

Vaadin 25.1 is the first feature release in the 25.x line. Key highlights include: Vaadin Copilot is now free for all users with a redesigned toolbar-based interface; Signals move to production-ready status, offering a reactive state management model in plain Java with component bindings, local/shared/computed state support; and browserless UI testing (previously commercial TestBench) is now free and open source under Apache 2.0. The release also adds new components including Slider, RangeSlider, and Badge (in Preview), modular Upload architecture, AI integration APIs via AIOrchestrator with Spring AI and LangChain4j support, Map drawing improvements, Grid scroll-to-column API, and Dialog viewport constraints. Additionally, SwingBridge is introduced as a separate tool to run Java Swing apps in the browser.

Vaadin 25.1: Free Copilot and production-ready Signals

Copilot is now free, with a redesigned workflow

Browserless UI testing is now free and open source

🎙️ Join us live on Wednesday, April 1