Methods, apparatus and computer program products implement a chat proxy component and a chat wrapper component. The chat proxy component controls interactions with a chat application by external users. The chat proxy component receives chat requests from external users and initiates a chat session only if a user is validated as a valid user. User validation may be performed by a chat payment application that validates a user only if payment is received for chat services, or by an external user validation system that validates users as, for example, employees authorized to use the chat application. Once a chat session is established, chat operations are managed on a session-specific basis. The chat wrapper component manages communication between the chat proxy component and the chat application. The chat wrapper component also permits the user-facing chat application to be situated on a remote computer.