I don't normally mention much commercial software here. But in this case I'm making an exception. Yes, I know the software isn't new and there's no newer version available than what's been discussed in weblogs for a long time. But I stumbled upon a feature in VoodooPad (for those who don't know: it's something like a desktop wiki) that was the deciding factor for me: you can run a wiki page directly as a shell script. And more importantly: you can configure which processor you want to use there. I simply entered Python there. And now I can quickly launch small scripts directly from my collection of note scraps and copy the output in the GUI and transfer it to other programs. For someone like me who thinks primarily in programs and not in manual processes, that's simply incredibly practical.