arcbox alternatives
Curated alternatives to arcbox — and why you'd switch.
CubeSandbox
Hardware-isolated microVM sandboxes for AI agents — sub-60ms boot, <5MB overhead, E2B-compatible API, self-hosted on your own KVM nodes.
Why switchBoth give agents hardware-isolated microVMs in under 100ms. CubeSandbox is Linux/KVM with an E2B-compatible API for self-hosted fleets; ArcBox is the macOS-native runtime — its own VMM — with Docker compatibility on the side.
Full comparison →forkd
fork() for agent microVMs: children fork copy-on-write from a warm Firecracker parent — 100 KVM-isolated VMs in ~100ms, live-VM branching in ~56ms, portable snapshots from a hub.
Why switchBoth are sandbox primitives for agents rather than services. forkd forks warm Firecracker VMs on Linux/KVM; ArcBox boots microVMs on Apple's hypervisor with a Docker-compatible engine beside them.
Full comparison →OpenSandbox
CNCF-landscape sandbox platform for AI agents: multi-language SDKs, unified API, CLI and MCP over Docker/Kubernetes runtimes — coding agents, GUI agents, evals and RL training.
Why switchOpenSandbox is a sandbox platform — SDKs, API, MCP — over Docker or Kubernetes; ArcBox is the runtime underneath that class of thing on a Mac, with the sandbox exposed directly through abctl.
Full comparison →