Sona Systems is the leader in cloud-based participant pool management software, helping thousands of research coordinators and researchers around the world set up studies, recruit participants, and manage credits or paid participation. Not only does the software grant researchers the ability to prescreen participants, but also restrict eligibility based on past participation in other studies, and manage study schedules. Furthermore, the system produces a wide array of participant pool usage reports and configuration options, giving research coordinators tight control over the entire research process.