OpenSandbox alternatives
Curated alternatives to OpenSandbox — 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 self-hosted sandbox runtimes for agents, split by isolation bet: CubeSandbox is microVM-first (KVM boundary, E2B-compatible API); OpenSandbox is platform-first (Docker/K8s runtimes, SDKs, CLI, MCP) for teams standardizing on existing infra.
Full comparison →computer
Virtual filesystem for agents inside a Cloudflare Durable Object — SQLite-authoritative state with pluggable execution: FUSE-mounted containers, isolate shell (just-bash) or isolate JavaScript.
Why switchSandboxed execution for agents: OpenSandbox provisions Docker/K8s runtimes behind a unified API; computer gets the same job done with Durable Objects and Workers isolates.
Full comparison →arcbox
Open-source container and VM runtime for macOS in pure Rust: drop-in Docker engine, sub-100ms agent sandboxes (`abctl claude`), full Linux VMs and throwaway macOS guests on one daemon.
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 →