ClearHealth is the First Free and Open Source Practice Management System. The system offers five major features like Medical Billing, Medical Accounts Recievable, Scheduling, Access Control, and EMR.

ClearHealth uses the extensible PHPGacl project for Access Control. This allows the software to define any security policy required by law (HIPPA) or by circumstances. User type, class or role can define this access control in ClearHealth.

ClearHealth provides an Object Oriented base EMR that can be extended without programming. To do this ClearHealth uses EMR Extensions, which are similar to HTML forms. Once you create this, the system automatically records the data, and correctly associates them with a patient or a patient encounter. Using this EMR, ClearHealth users not only limit someone else's concept of what they need, but also can make an EMR that works the way their practice does.

Now that a first class medical billing system is available under the GPL, ClearHealth uses the FreeB medical billing system. FreeB is capable of tracking versions of bills, and allows users to modify formats without programming.

In ClearHealth, accounts receivable is tightly integrated with the Medical Bill Formatting system and the EMR. ClearHealth uses a powerful set of filters to allow you to see whatever portion of the schedule you want. It supports overbooking and gives a visual indication of the availability of resources. ClearHealth has one of the most advanced scheduling systems possible using a web browser as a super-thin-client.