CodeSandbox SDK Alternative for AI Agents

Teams seeking alternatives to CodeSandbox SDK typically do so not because the platform lacks execution capacity, but because mature agent products need persistent terminals, running services, user sessions, port management, dependency handling, logs, SSH connectivity, and recovery mechanisms that resemble a runtime environment users can return to repeatedly. Freestyle VMs offer hardware-virtualized Linux systems that run indefinitely with genuine VM primitives suited for long-running agent workspaces.