If you’re intended to prototype your SharePoint screens in your projects, you can use Balsamiq tool for drawing mock-up screens. Balsamiq is very useful wire-framing tool which provides lots of templates for drawing mock-up screens. You can find lots of templates from myBalsamiq site.
For SharePoint 2013, James Sturges has prepared a mock-up template. So you can easily prepare wire-frame of a SharePoint 2013 portal by this template.
If you want to wire-frame SharePoint 2010 screens, there is also a template for that prepared by James. You can download it from here.
Besides myBalsamiq site offers some other templates for SharePoint 2010.
SharePoint 2010 Tag and Notes Dialog
Hope these help 🙂