Apalache vs HOL Light
| Apalache | HOL Light | |
|---|---|---|
| Free plan | No | No |
| Free trial | No | No |
| Paid from | — | — |
| Open source | No | No |
| Platforms | — | Linux, macOS, self-hosted, Web, Windows |
| Verification method | symbolic | deductive |
| Supported formalisms | invariants | theorem-proving |
| Counterexamples | Yes | — |
| Input languages | TLA+, Quint | OCaml; higher-order logic |
| Deployment | self-hosted | self-hosted |
| Free plan | — | Yes |
Both are listed in Best Formal Verification Tools. On The Geeks Club, HOL Light scores higher on our published basis.