D Clinic is described as 'Cloud-based clinic management system with a wide range of features including but not limited to:
Electronic health record of patients
Appointment scheduling
Prescription and bill generation
inventory&pharmacy management' and is an website. There are more than 10 alternatives to D Clinic, not only websites but also apps for a variety of platforms, including SaaS, Android, iPhone and iPad apps. The best D Clinic alternative is SimplePractice. It's not free, so if you're looking for a free alternative, you could try Carepatron or MClinic. Other great sites and apps similar to D Clinic are LifeLinkr, DrPro, CloudMedico and Sessions Health.