I don’t do too much with web & mobile app design on this blog, but I wanted a really good freebie post and came across this post on Smashing Magazine.  The free wireframing and UI design kits are pretty solid.  They have everything from iPhone to Android to websites and they are all free for download.

If you aren’t familiar, wireframes can be effective in many different ways.  One use for them is outlining the ideas for your startup so that you can pitch to investors or share ideas with potential co-founders.  It can also be a faster way to work out your ideas for a website or app, rather than developing the features and then undoing the elements you don’t like.

So check out the freebies from Smashing Mag and save yourself some time already!