ephemora-cell alternatives
Curated alternatives to ephemora-cell — 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 isolate agent code execution; cubesandbox is a hardware-isolated microVM with an E2B-style API for full workloads, Cell is a WASM capability boundary for tools and snippets.
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 exposes sandboxes over Docker/K8s via SDKs and MCP; Cell is the in-process WASM alternative when you don't need a whole OS per execution.
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 switchforkd forks Firecracker microVMs copy-on-write for ms-scale agent sandboxes; Cell gets sub-ms by staying inside wasmtime - different trade-off on what code can run.
Full comparison →superserve
Persistent, secure sandboxes for AI agents on Firecracker microVMs — TypeScript and Python SDKs, CLI and console; the runtime is a hosted service, the SDK stack is Apache-2.0.
Why switchsuperserve offers persistent Firecracker sandboxes with SDKs; Cell is ephemeral, stateless per-execution WASM with signed records instead of persistence.
Full comparison →