Rivet is an orchestration platform for agentic workloads. Long-running processes run as durable Actors with state, scheduling and realtime built in, so work survives restarts instead of starting over.

Actors - stateful processes with scheduling and realtime.
Agents - one durable process per agent with memory across restarts.
Workflows - multi-step operations that replay from the failure point.
Sandboxes - isolated filesystems and networks for untrusted code.
Open source - self-hostable with millisecond cold starts.

It suits teams deploying coding agents and background AI work that need density and control over long-lived processes.