Circle is an all-in-one platform for building online communities, bringing discussion spaces, courses, memberships, live events, payments, automations, and branded mobile apps together under one brand instead of stitching together a forum, a course tool, and a chat app. Community organizers create spaces for discussions, Q&A, and content, gate them behind free or paid membership tiers, run live streams and events, and deliver structured courses with lessons, progress tracking, and drip scheduling. Circle handles subscription billing and one-time payments, member onboarding flows, granular permissions, and analytics, and it integrates with email tools, webinar platforms, and automation services. Its higher tier, Circle Plus, adds fully branded iOS and Android apps that Circle builds, publishes, and maintains in the app stores on the customer's behalf. In 2025 Circle added AI agents that can welcome and guide new members, answer questions using the community's own content, and moderate posts in real time, included for Plus customers. Circle is used by creators, coaches, professional associations, and companies running customer or cohort communities. It is sold as a paid monthly subscription across several tiers, with a free trial rather than a permanent free plan, and pricing that scales with features, admin seats, and branded app access.