The primary purpose of open-source licensing in software is to promote collaboration and transparency in software development. Open-source licenses allow users to view, modify, and distribute the source code, fostering innovation and community-driven enhancements. This model encourages developers to collaborate on projects, share improvements, and resolve bugs collectively. The open-source paradigm not only democratizes access to software technologies but also leads to more robust and adaptable software solutions, benefiting both individual developers and organizations alike.