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GitHub is a widely used and available configuration management tool that easily allows code changes to be reviewed, implemented, and branched.Key advantages include ease of use and is free to use.IBM Relational Clearcase is a configuration management tool that has been available since $1992,$ and with that, years of experience handling projects of all sizes.Key advantages include its depth and support.In comparison, GitHub is much easier to use than Clearcase. This is both a positive and a negative because the reason it is easy to use is that it does not have the same level of features that Clearcase does. GitHub has a simplified version of Clearcase's. Where GitHub provides change logs$,$ Clearcase provides a change's status, notes, attachments, history, requirements, severity etc. Where GitHub provides forks, Clearcase provides development views $($dynamic and snapshot$),$ integration views $($also dynamic and snapshot$)$ while allowing publishers to limit views to certain people and accept changes only from certain people. These features cause Clearcase to have more depth, but at the same time, causes the usability to decline since users are less likely to understand everything at once.GitHub is free to use and thus makes it a clear competitor in the configuration management space. This, too, comes with a benefit, but also a detriment. Since GitHub is free for most, support may not be as good as a paid service such as Clearcase. IBM has decades of experience providing service to customers, and is a leading competitor in the service space. This is a clear advantage for bigger projects that demand more support as time progresses and projects become more complex.To conclude, both pieces of software have their merits, and may be used for not only small projects, but also big company projects. In this case, GitHub would provide the best environment for a small group to use for their project. It may even be permissible to exchange files freely without utilizing the features of Github, but may come at a disadvantage since changes cannot easily be managed and could cause issues if a change does not implement well into the project.