Best realtime AI tools

Rivet is an open-source library for developers building scalable, real-time applications with durable state. It provides long-lived, stateful compute "actors" that simplify complex tasks like creating AI agents, collaborative apps, and multiplayer games. With features like built-in real-time communication, fault tolerance, and edge deployment, Rivet offers a powerful, self-hostable alternative to services like Cloudflare Durable Objects.