Lean
6.9#1 in formal verification toolsFree planFree planWebLinuxmacOSWindows
VisitLean vs SPIN
What both publish
| Fact | Lean | SPIN |
|---|---|---|
| Founded | 2013 | 1980 |
| 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. | Starting with SPIN version 6.4.5, its code, sources, and executables are available under the BSD 3-Clause license. |
Lean plans
- Lean 4Free
SPIN plans
- SPINFree
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 SPIN if…
SPIN suits people modeling distributed software or communication protocols who need to simulate or verify asynchronous behavior. It is self-hosted and requires Promela specifications, plus a C compiler and preprocessor for verification.