Vaadin has moved to GitHub

This trac is available only for reference and will disappear in the near future.

Please file issues for the appropriate project in GitHub, the Vaadin Framework project is

Add-ons and other projects are typically available as<projectname>

Old page below for reference:

Welcome to Vaadin Trac

Vaadin is an open-source user interface framework, providing widgets and tools for the development of high-quality web applications.

You can register from the Trac toolbar above on the right.

Contributing code

To contribute code, please read

We follow strict coding conventions within our team. If you wish to contribute code, you must follow them as well.

Technical articles, wiki for Vaadin users
Wiki for Vaadin developers
Release, internal and nightly builds
Browse the sources
How to start development of Vaadin
Other development documents
Hosting personal/prototype applications

Book of Vaadin JavaDoc API Forums

See contribute pages on

Creating bug reports

Writing good quality bug reports is one of the best ways to help with the project. If you believe you have found a bug, register to trac and read instructions: Writing a good ticket

About Trac

If you are new to trac, you might want to check how to write new tickets or Trac guide.

To edit wiki or to create new tickets or comment old ones, you need to register and login from the Trac toolbar. Please contact marko.gronroos at if you have any problems with registration or your user account. Also, if you need more permissions, for example to be able to close tickets or delete wiki pages, please contact the administrator.

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Note: Emails are shown only for registered users (we hate spam as much as you do).

Note This wiki may contain some old and deprecated info related to IT Mill Toolkit.

Last modified 17 months ago Last modified on 11 Dec 2016 19:41:57