OpenJML vs TLA+
| OpenJML | TLA+ | |
|---|---|---|
| Free plan | No | No |
| Free trial | No | No |
| Paid from | — | — |
| Open source | No | No |
| Platforms | Windows, macOS, Linux | Windows, macOS, Linux |
| Verification method | deductive | hybrid |
| Supported formalisms | contracts | invariants |
| Counterexamples | Yes | Yes |
| Input languages | Java and JML | TLA+ and PlusCal |
| Deployment | self-hosted | both |
Both are listed in Best Formal Verification Tools. On Samsung Mobile US Press, TLA+ scores higher on our published basis.