Jacco Niewland releases swipr, a Visio plug-in for information architects

According to Jacco Niewland, swipr is “a toolset for Visio that allows the integration of sitemaps/screenflows and wireframes into one fully interactive HTML deliverable.”
Swipr is released under the GNU Open Source license, and is completely free. It “allows for one screenflow/sitemap document and multiple wireframe documents to be exported into one integrated HTML set, viewable by any browser; it also has the option of creating a simple prototype from all your wireframes.” It’s suited for collaboration by teams of multiple IAs and it doesn’t require any special plugins to view the HTML prototype output.
Niewland suggests that the prototypes created by swipr are suitable for early usability testing, and that the documents print well from Visio.
At swipr.com you can download the software (still in beta), see examples, and contribute to a forum.
Thanks, Jacco!