What software development tools, mostly in terms of engineering your apps, do you use? Most UML tools for linux, seem to be outdated and very light on features (please correct me). What do you use to plan your apps before writing the code?
A whiteboard.<p>Seriously. A whiteboard, post-it notes, and lots of pencils and paper.<p>I'm a firm believer in UML-as-sketch (vs UML-as-blueprint), and for sketching, nothing I've seen beats the old school.<p><i>EDIT: fixed punctuation</i>
I used Adobe's Ideas app for the iPad to sketch UI ideas & DB schemas last weekend. I also downloaded 37signals' Draft app but it sucked major monkey balls & I will be hitting them for a refund if they don't fix the bug they have managed to sneak into an app that has a grand total of 4 features.
UML tools seem to lack substance on any platform. Use pencil, eraser, and paper for design. And know that most diagrams are not as useful as everyone says they are.