In this model, a company develops some open source code, and sells consulting and maintenance services on it. This is similar to `best knowledge here', but with an additional advantage in terms of time, since a competitor needs some months to create a similar code, or to understand all the intricacies of someone else's source. This gives a time advantage to the company or group that creates the software in the first place. Examples are Cygnus solutions and their support of the gcc/egcs compiler and the glibc library. AbiSoft, BitWizard, and Digital Creations are other firms with a similar business model.