"Cathedral vs the Bazaar"

"The Cathedral and the Bazaar" is an essay written by Eric S. Raymond in 1997 and also a part of a book of the same name published in 1999.

This essay is contrasting two different software, one is the Cathedral and developed by a few people and the Bazaar that is an open source developed in the Internet in front of the public.

According to Raymond when we have a software that anybody can play with and test with, in most cases these people can find errors and by screwing the software and fixing it later these errors are more likely to be discovered and get fixed in no time. It's like we have a huge amount of people working as a team in a project, we will definitely have this project done with no errors very fast.
On the other hand we have the Cathedral which is a software that only a few people can mess with, so for these people to find the errors and to fix it it'll take "an inordinate amount of time and energy".