Is there a reason (or am I wrong about it) that the most common and most liked tools for developers are mostly Open Source, while there are almost no Open Source tools aimed for designers making it big?
There's a huge gap for a good UX design app in the Linux world. I hope Akira[0] can fill it, but I find for web stuff, with the right prototyping setup and frameworks, I can build stuff very rapidly to test out.