Free and open-source software

Free and open-source software (FOSS) refers to programs that anyone can use, modify, and share without cost. "Free" here means freedom rather than price; users have the liberty to study how the software works and adapt it to their needs. The source code, which is the underlying code that runs the software, is made available to the public. This openness encourages collaboration, innovation, and transparency. Popular examples include the Linux operating system and the Firefox web browser, which thrive due to contributions from a global community of developers and users.