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Some software has source code that only the person, team, or organization who created it—and maintains exclusive control over it—can modify.
People call this kind of software "proprietary" or "closed source" software.
For example, they may use online word processing, email management, and image editing software that they don't install and run on their personal computers.
Instead, they simply access these programs on remote computers by using a Web browser or mobile phone application.
In general, open source licenses grant computer users permission to use open source software for any purpose they wish.
Some open source licenses—what some people call "copyleft" licenses—stipulate that anyone who releases a modified open source program must also release the source code for that program alongside it.
Some cloud computing applications, like Google Apps, are proprietary.
Others, like own Cloud and Nextcloud, are open source.
Because open source code is publicly accessible, students can easily study it as they learn to make better software.The term "open source" refers to something people can modify and share because its design is publicly accessible.The term originated in the context of software development to designate a specific approach to creating computer programs.Because anyone can view and modify open source software, someone might spot and correct errors or omissions that a program's original authors might have missed.And because so many programmers can work on a piece of open source software without asking for permission from original authors, they can fix, update, and upgrade open source software more quickly than they can proprietary software. Many users prefer open source software to proprietary software for important, long-term projects.