My inspiration for starting my own business is a Danish guy called David Heinemeier Hansson and his company 37Signals (now called Basecamp). I keep returning to Basecamp (their project management system) - because the principles upon which they set up the company shine through in the software. It’s incredibly simple (too simple for some), it makes decisions for you (very little setup) and focuses on what’s important (communication first, everything else is secondary).