Create and share mockups online with Tiggr

Tiggr is an application for creating user interface mockups collaboratively online. It focuses on creating mockups for rich web application development.

The service developed by Exadel (the inventors of Richfaces) is especially interessting for developing mockups of Richfaces jsf applications because it contains the Richfaces component set (e.g. tabPanel, fileupload, calendar, etc.) as mockup objects. Mockups can created online by different members. Check it out on http://tiggr.exadel.com/.