Prototyping

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Brainstorming

Stencils, Sketch Pads & Accessories for User Interface Design — UI Stencils

Mockups To Go - A user-contributed collection of ready-to-use UI components and design patterns built using Balsamiq Mockups.

http://www.balsamiq.com/products/mockups/manifesto#noproto

Written in January 2011

The Balsamiq Mockups Manifesto | Balsamiq

Using @balsamiq today to create mockups for our #CRO clients. Web designers, check it out. So good. http://t.co/aaiNbMWj @balsamiq http://t.co/denj2jXS is an amazing tool. I just spent the whole weekend jamming on it.

Balsamiq

Pretotyping

Where X% is a disheartening large percentage (say, 80-90% or more) and Y is some new thing (an app, a company, a restaurant, a novel, a non-profit organization, a genetically modified artichoke, etc.)