
Pencil Project
Pencil is a standalone app or Firefox extension that lets you create diagrams or UI mockups. It doesn't have collaboration/multi-user features.
mockingbird is an online tool that makes it easy for you to create, link together, preview, and share mockups of your website or application. It is not Flash based.
mockingbird is an online tool that makes it easy for you to create, link together, preview, and share mockups of your website or application.It is not Flash based.
mockups wireframes wireframe-prototype design