| Price from | — | Free |
| Free plan | — | Yes |
| Free trial | — | — |
| Open source | — | — |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 0 | 1 |
| Spec score · Formal Verification Tools | 7.8 (#14) | 8.0 (#11) |
| Community support | The acl2, acl2-help, and acl2-books mailing lists serve general discussion, user help, and discussion of developments in ACL2 and its Community Books. | The project directs questions to GitHub Discussions and a public Zulip forum, and lists a low-traffic mailing list and maintainer contact email. |
| Installation | Unix-like installation instructions cover Linux, macOS with Intel or ARM processors, and FreeBSD; Windows has separate installation instructions. | The project offers binaries for Windows, Linux, and Mac OS X, and installation through OPAM, Docker, Nix, or source builds. |
| Purpose | ACL2 combines a Lisp-based programming language for formal models with a reasoning engine that can prove properties about those models. | F* is a general-purpose proof-oriented programming language for purely functional and effectful programming. |
