Rivet

Rivet is an orchestrator for agentic workloads: run agents, workflows and sandboxes as durable Actors that survive restarts and scale independently. Built for every kind of agent — coding agents get a sandbox and durable memory per session, agent app builders get a backend per user deployed on generation, company-specific agents run on internal data inside your network, personal agents get one long-lived Actor per user, and realtime apps get low-latency infrastructure. The durable-Actor model is what separates it from session-based agent runners: work persists, state survives, and scaling is per-Actor rather than per-server.

Who it's for: developers building agent products who need reliable execution across restarts and scaling events, teams deploying company-specific agents on internal data, and anyone tired of losing agent state when a container dies. Free tier available. The honest test: run an agent workload that takes longer than a typical serverless timeout and see whether the durable execution actually holds up — that's the whole promise and the whole risk.