CiviCRM
CiviCRM is an excellent example of the potential of open-sourced customer relationship management software platforms and continues to serve as a role model for other customer relationship management software platforms to aspire to be. CiviCRM has earned this distinction by consistently championing moddability and usability over other features, and it is respected within the software engineering community for the ease with which it can be molded to fit a company's specific needs. This open-source nature makes CiviCRM an especially worthwhile choice for smaller companies that can't afford to invest in a pre-built software engine. Instead, by going with CiviCRM, a company can save money on the engine and then change it to suit their needs as their company grows naturally. This capacity for natural expansion puts CiviCRM far above its competitors in terms of usability and serves as an excellent reminder of the power nature of open-source programming.