Ping Identity and FusionAuth are customer identity and access management (CIAM) solutions with shared features such as unlimited user management, OAuth token utilization, and essential CIAM tools like multi-factor authentication and single sign-on. However, they differ significantly in cost, user management, and deployment options. FusionAuth is free for unlimited users and offers a true single-tenant architecture that can be fully on-premise or in a private cloud, which aids in regulatory compliance and enhances data privacy. It also provides comprehensive user management tools and real-time analytics. FusionAuth's flexibility is further highlighted by its ability to handle complex enterprise identity unification challenges, allowing organizations to manage distinct user datasets within a unified system. Additionally, FusionAuth's smaller, nimble structure enables the development of custom features tailored to clients' specific needs, contrasting with Ping Identity's larger scale and more rigid structure.