Lean
6.9#1 in formal verification toolsFree planFree planWebLinuxmacOSWindows
VisitLean vs NuSMV
What both publish
| Fact | Lean | NuSMV |
|---|---|---|
| License | Lean is released under the Apache 2.0 license, which the documentation describes as allowing others to use and extend the code and mathematical libraries freely. | NuSMV v2 is open source software distributed under the LGPL v2.1 license. |
| Platforms | The reference lists Linux, macOS, and Windows among Lean’s supported platforms, with Tier 1 binary releases available through elan. | The downloads page lists current binaries for GNU/Linux, macOS, and Windows. |
| Support | The Lean Community Zulip is described as the central hub for questions and collaboration, and Lean FRO hosts weekly technical office hours. | The project directs general questions and bug reports to its users mailing list and provides a separate list for announcements. |
Lean plans
- Lean 4Free
NuSMV plans
- NuSMV v2Free
Pick Lean if…
Lean suits programmers, theorem provers, and mathematicians working with formalization, proof checking, or software verification. Its general coding capability and browser version may also suit users exploring Lean before choosing a local setup.
Pick NuSMV if…
NuSMV suits users verifying finite-state designs, building custom verification tools, or researching formal verification methods. It is relevant to teams working with CTL, LTL, or PSL specifications.