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| Metric | Wasmer | Bun | Firecracker |
|---|---|---|---|
| Score | A-83 | B+76 | B70 |
| Type | WebAssembly | Language | MicroVM |
| Execution | hybrid | jit | aot |
| Interface | cli | cli | api |
| Cold Start | 2ms | 3ms | 125ms |
| Memory | 8MB | 25MB | 5MB |
| Startup | 1ms | 1ms | 100ms |
| Isolation | process | process | microvm |
| Maturity | stable | stable | production |
| Languages | Rust, C, C++, Go, Python, Ruby, PHP | JavaScript, TypeScript, JSX, TSX | Any |
| License | MIT | MIT | Apache-2.0 |
| Links |