OSS, or Open Source Software, refers to software that is made available to the public with its source code. This means anyone can view, modify, and distribute the software freely. The collaborative nature of OSS encourages innovation and allows developers to improve and adapt the software to meet various needs. Many popular applications, such as Linux and Apache, are examples of OSS. These projects often have large communities that contribute to their development, ensuring continuous updates and support. By using OSS, individuals and organizations can save costs and benefit from the collective expertise of a global network of developers.