bazaar 1. Analogy of software development methodology. Software developed in public according to normative FOSS praxis is said more like the chaotic and more organic trading style of a bazaar than the pristine top-down architecture of a cathedral created by visionary engineers. The analogy is made in a 1999 book by Eric Raymond, called The Cathedral and the Bazaar. Characteristics of bazaar style development include releasing code early and often, treating users as co-developers and making extensive use of internet for project communications and interaction with code repositories. 2. A version control system created by Canonical in 2005 for development of the Ubuntu GNU/Linux distro and related tools.