microsandbox
Local-first microVM runtime for running untrusted agent code safely.
Updated
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Use cases
About microsandbox
microsandbox is listed in our sandboxes & code execution category and is aimed at builders. Local-first microVM runtime for running untrusted agent code safely. Pricing, as the maker states it: Open source. Maturity: Mature. We last checked the official link on 2026-10-16.
What is microsandbox?
microsandbox runs untrusted workloads, such as AI agents, user code, plugins, CI jobs and scrapers, inside fast, local microVMs with hardware-level isolation.
You can fork live sandboxes and snapshot running ones.
Sources: the official README and our directory listing, checked 2026-10-18. Official site: docs.microsandbox.dev/getting-started/introduction.
Who is microsandbox for?
Developers who need to run agent or user code safely on their own machines.
microsandbox at a glance
- Open source: Yes (Apache License 2.0)
- GitHub: superradcompany/microsandbox · 8,755 stars (as of Oct 21, 2026)
Key features
- Hardware-isolated microVMs
- Local-first
- Fork and snapshot sandboxes
microsandbox FAQ
What is microsandbox?
microsandbox runs untrusted workloads, such as AI agents, user code, plugins, CI jobs and scrapers, inside fast, local microVMs with hardware-level isolation.
Who is microsandbox for?
Developers who need to run agent or user code safely on their own machines.
Is microsandbox free?
microsandbox's pricing, as the maker states it: Open source. Open-source tools are free to use, though you may still pay for model API usage or a hosted plan. Check the official site for current plans.
Is microsandbox open source?
Yes. microsandbox is released under the Apache License 2.0, according to its GitHub repository.
What are alternatives to microsandbox?
Similar tools include CubeSandbox, Judge0, forkd, nono, Tensorlake and NVIDIA OpenShell.
microsandbox ratings and reviews
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microsandbox alternatives
Other sandboxes & code execution tools in our directory. See all sandboxes & code execution tools →
CubeSandbox
Lightweight, concurrent sandbox for running AI agent code securely.
Judge0
Sandboxed code execution system for running untrusted code from people and AI.
forkd
MicroVM sandbox runtime for AI agent fan-out that forks KVM-isolated child VMs from a warm snapshot in milliseconds.
nono
Zero-trust sandboxing for agent runtimes.
Tensorlake
Serverless runtime that gives agents MicroVM sandboxes and durable orchestration for long-running background jobs.
NVIDIA OpenShell
Sandboxed runtime for autonomous agents with declarative YAML policies on file, network and credential access.
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