This question already has an answer here:
- Native, FOSS GUI prototyping tools? 5 answers
Like: http://www.balsamiq.com/ for Linux is there any professional quick mockup builders available? (not pen and paper we know we do that mostly but it needs to be quick and professional for sharing, not like open-office power point or gimp or with wine macromedia flash).
Something specially dedicated for linux in a sense of making specific professional mockup's under linux. is there somthing?