"Maqetta is an open source project that provides WYSIWYG visual authoring of HTML5 user interfaces. The Maqetta application itself is authored in HTML, and therefore runs in the browser without requiring additional plugins or downloads."

Check http://maqetta.org/

Woolly minded people write woolly memos, woolly letters and woolly speeches.

Good writing is not a natural gift. You have to learn to write well. Here are 10 hints:

1. Read the Roman-Raphaelson book on writing. Read it three times.

2. Write the way you talk. Naturally.

3. Use short words, short sentences and short paragraphs.

4. Never use jargon words like reconceptualize, demassification, attitudinally, judgmentally. They are hallmarks of a pretentious ass.

5. Never write more than two pages on any subject.

6. Check your quotations.

7. Never send a letter or a memo on the day you write it. Read it aloud the next morning — and then edit it.

8. If it is something important, get a colleague to improve it.

9. Before you send your letter or your memo, make sure it is crystal clear what you want the recipient to do.

10. If you want ACTION, don’t write. Go and tell the guy what you want.

"Created by User Experience professionals and built upon the principles of
Design Studio Method and Adaptive Path's Good Design Faster, UI Sketcher enables you to rapidly sketch, refine and share user interface ideas."

Read more on uisketcher.com.

"...The screen is showing something on one side, and the user is reacting on the other side. My flow diagrams illustrate this two-sided nature with a bar. Above the bar is what the user sees. Below the bar is what they do. An arrow connects the user’s action to a new screen with yet another action."