All About Open Source Software

Open-source software (OSS) is  computer software that is available in source code form: the source code  and certain other rights normally reserved for copyright  holders are provided under a software licence that permits users to study, change, improve and at times also to distribute the software.
Some open source licenses meet the requirements of the Open  Source Definition .  Some open source software is available within the public domain .
Open source software is very often developed in a public, collaborative  manner. Open-source software is the most prominent example of open source  development and often compared to (technically defined) user generated content  or (legally defined)  open content movements
A report by Standish Group states that adoption of open-source software models has resulted in savings of about $60 billion per year to consumers.