Well if you're looking for any kind of project, some famous ones are: * Netscape a.k.a. Firefox * Blender (http://blender.org http://blender.org) was commerci

Well if you're looking for any kind of project, some famous ones are: * Netscape a.k.a. Firefox * Blender (http://blender.org http://blender.org) was commercial until 2002 when the company behind it failed. The rights to the code were bought for €100,000 of user donations. * Lightworks, a video editing program, is apparently supposed to become open source, right now it could be described as "freemium".