Side by side
Lean vs NuSMV
Both stand on formal verification tools. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan LinuxMacWeb+1
Lean combines general programming with formal proof work and a substantial community mathematical library. It is a focused choice for people willing to work with formalization and proof tooling.
Visit Lean Free plan LinuxMacWindows
NuSMV brings several formal verification methods and specification types into a free, open-source tool. Its deprecated processes and the absence of a developer-extension tutorial are worth noting before adopting it.
Visit NuSMVThe facts
| Lean | NuSMV | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | Linux, Mac, Web, Windows | Linux, Mac, Windows |
| Lowest paid plan | Free or on request | Free or on request |
| Plans published | 1 | 1 |
| Maker | Not published | Not published |
| Website | lean-lang.org | nusmv.fbk.eu |
| On formal verification tools | #11 of 34 | #15 of 34 |
Lean: what it does well
- Free and open source under Apache 2.0.
- Mathlib contains over a million lines.
- Lake manages Lean projects.
- Lean4Web runs Lean code in a browser.
- Learning resources include tutorials and interactive games.
What to know first
- VSCodium and Cursor support is unofficial.
- x86-64 macOS and WebAssembly are Tier 2 platforms.
NuSMV: what it does well
- Checks systems against CTL specifications
- Supports LTL and PSL model checking
- Combines BDD-based and SAT-based methods
- Runs on Linux, macOS, and Windows
- Distributed under the LGPL v2.1 license
What to know first
- Processes are deprecated
- No developer-extension tutorial is currently available