K Framework vs VeriFast
| K Framework | VeriFast | |
|---|---|---|
| Free plan | No | No |
| Free trial | No | No |
| Paid from | — | — |
| Open source | No | No |
| Platforms | api, Linux, macOS, self-hosted | Windows, macOS, Linux |
| Free plan | Yes | — |
| Verification method | hybrid | symbolic |
| Supported formalisms | theorem-proving | contracts |
| Input languages | K specification language; C; WebAssembly; EVM; Plutus-Core; Michelson; TEAL | C, Rust, Java |
| Deployment | self-hosted | self-hosted |
Both are listed in Best Formal Verification Tools. On The Geeks Club, K Framework scores higher on our published basis.