Directory / Firecracker
Firecracker
Verified
AWS open-source microVM monitor used by sandbox products.
Firecracker is open-source virtualization software for launching microVMs with a small device model. AWS Lambda and Fargate use it, and sandbox vendors build services around it. Firecracker supplies a hypervisor; factory orchestration requires additional software.
- Model support
- Multi-model
- Deployment
- Self-hosted
- Open source
- Yes
- License
- Apache-2.0
- Pricing model
- Free
- Added / updated
- 19 Aug 2026 / 19 Aug 2026
firecracker-microvm.github.io · Docs · Source
Assessment
Firecracker is the isolation primitive; an operational sandbox still needs images, networking, an API, and policy. Vendor use of Firecracker leaves the surrounding service's source and hosting model unresolved.
Strengths
- Apache-2.0 microVM monitor.
- Underlying primitive for several sandbox services.
- Can run on operator infrastructure with KVM.
Limitations
- No agent API or control plane.
- Requires Linux and KVM operations.
- No issue-to-PR workflow.