Simple Practice https://www.simplepractice.com/pricing/ Ranges $29-$99 per month, 30 day free trial, free $200 credit with referral code, contact me and I will send you a referral link
Theranest
https://theranest.com/pricing/ ranges $39-$91 per month, 21 day free trial
Therapy Notes
https://www.therapynotes.com/pricing/ Ranges $49-$59 per month, 30 day free trial
My Best Practice
https://practice.mbpractice.com/Account/FreeTrial $39 per month, 14 day free trial
Therapy Appointment
https://www.therapyappointment.com/ Ranges $10-$59 per month, 30 day free trial
Sessions Health
https://www.sessionshealth.com/ ranges $0-$39 per month, 30 day free trial
Theraplatform
https://www.theraplatform.com/ ranges $39-$59 per month, 30 day free trial