Crossword Add-on | Vaadin

Crossword component for Vaadin 14+ with multiplayer support

This is a crossword puzzle component for Vaadin 14+ that can take a JSON file in the format defined here and can support multiple collaborative players.


Link to this version
ExperimentalReleased 06 October 2022Apache License 2.0
Framework Support
Vaadin platform 14+
Install with
Release notes - Version 1.0.0

First release.


  • Basic crossword rendering
  • Keyboard/mouse navigation
  • Multiple highlighted words (for collaborative solving)
  • Clue rendering
  • Ability to set the current crossword via JSON file
  • Methods for setting global settings (e.g. whether to show mistakes or skip filled-in cells)