CodeSandbox vs microsandbox

CodeSandbox is a web and iOS service for creating isolated development environments that execute code. Its SDK can spin up environments programmatically, while microVMs can be started, cloned, or restored from snapshots within two seconds. Snapshots let work resume in the same sandbox after inactivity, and users can set the inactivity period before automatic hibernation. Multiple agents can run in parallel without interfering, and forking supports A/B testing of different agents. Tests can run inside sandboxes for CI/CD, with environments able to hibernate after completion. Sandpack provides live browser coding, Storybook Integration creates a playground for each story, and CodeSandbox lists a VS Code extension. The service says it can handle millions of concurrent VMs. CodeSandbox was founded in 2017, is headquartered in Amsterdam, and CodeSandbox BV is a Together AI company.

Microsandbox runs untrusted workloads inside microVMs, each with its own Linux kernel, filesystem, and network boundary rather than sharing the host kernel. It can run AI agents, user code, plugins, CI jobs, scrapers, and automation. The local runtime starts on a user's machine without a daemon, root service, or account; it can also run on personal servers or clusters, and its cloud platform can be deployed in the user's infrastructure. Microsandbox offers SDKs for TypeScript, Rust, Python, Go, and Ruby, plus a CLI and MCP workflows, and accepts OCI images from container registries. By default, sandboxes can reach the public internet, while private, host-local, link-local, and metadata destinations are blocked; egress can be allowlisted or disabled. The runtime is open source under Apache 2.0. The Free plan is $0 per month, while paid plans start at $49 per month. Microsandbox Cloud is in private beta and requires an access request.