Fly.io Machines
Execution SandboxProprietary · Proprietary (platform); flyctl CLI is Apache-2.0★ 1,717（2026-10-04）Managed only
Firecracker microVMs with suspend/resume across 18+ regions.
Fly.io Machines are hardware-virtualized Firecracker microVMs that boot in under a second and can suspend and resume, spanning more than 18 regions; Fly also ships Sprites, a persistent checkpoint/restore product aimed at agents.
Caveat: Managed-only; the platform is proprietary and flyctl (the CLI) is Apache-2.0.
Key facts
| Category | Execution Sandbox |
|---|---|
| License | Proprietary (platform); flyctl CLI is Apache-2.0 |
| Language | Go |
| Self-hosted | No |
| GitHub stars | 1,717 (2026-10-04) |
| Last push | 2026-10-02 |
| Last verified | 2026-10-04 |
| Repository | https://github.com/superfly/flyctl |
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