Implementations relate to embedded programs and interfaces for chat conversations. In some implementations, a method includes initiating an embedded application in association with a chat interface displayed by a messaging application that executes at least in part on a first user device. The chat interface displays messages originating from other user devices participating in a chat conversation over a network and associated with chat users. An indication is received over the network that one or more particular devices of the other user devices have connected to an embedded session associated with the embedded application. In response, chat identities associated with particular users of the particular user devices are provided from the messaging application to the embedded application. The particular users are designated as member users of the embedded session, and the embedded application is updated based on data received from particular user devices of the embedded session.