TheraNest (a Therapy Brands product) is a veteran behavioral health practice management system used by solo practitioners, group practices, and nonprofits. It covers scheduling with reminders, therapy-specific notes (including Wiley Practice Planner integration for treatment planning), a client portal, telehealth, credit card processing, and insurance billing with claims and ERA support. Its client-based pricing model — tiers by active client count rather than strictly per clinician — can be economical for practices with many clinicians and modest caseloads. The platform is mature rather than cutting-edge; AI documentation arrives through the broader Therapy Brands ecosystem and integrations rather than a native ambient scribe, and the interface shows its age against newer competitors. It remains a sensible pick for agencies and groups wanting proven billing workflows, Wiley-based planning, and a vendor with long behavioral health history.