Today with close to 0 money and 0 time spent you can be setup with a professional grade development environment for a one man/few men shop with continuous integ

Today with close to 0 money and 0 time spent you can be setup with a professional grade development environment for a one man/few men shop with continuous integration, test/prod servers, bug tracking, ... Parallel to that there is a similar list of utilities that handle the management part of the business. (time management, meeting, marketing, billing, ...) All of those give you opportunities to scale your business before you need to "enterprisify". Quite an exiting time for experimenting businesses on the cheap. One worry though, there is not much "open source" or more precisely a lot of lock in. Nothing new of course for cloud based SaS, but still something ...