Dudle - Dudle is an online scheduling application, which is free and open source.
TheraNest - Mental health software for psychologists, social workers, therapists, counselors.
WebPT - WebPT is a completely legit and reliable physical therapy automation software platform that allows rehabilitation centers to streamline their business operations.
Framadate - Make your polls
Kareo - Kareo - Go Practice | Medical Office Software for Small Practices