[tillk]

> I honestly wonder how they do it.

Have you ever heard of open source? :)

I've contributed to this project and various others and I frequently had people either hire me to add features to a certain project I worked on/released or bought me a book or so off my Amazon wishlist.

Though one time a company actually paid me to work on open source, this is nothing that pays my rent (currently) and also not my motivation to work on open source in the first place. My main driver is that I use open source and I decided to give back. It also helps my resume though I never really needed that either.

As for RoundCube's design — thank you. I am not a 100% sure right now if "money" went towards the design, but feel free to drop us a line at hello~at~roundcube~dot~net.