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Lean4 Alternatives
Similar projects and alternatives to lean4
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Nim
Nim is a statically typed compiled systems programming language. It combines successful concepts from mature languages like Python, Ada and Modula. Its design focuses on efficiency, expressiveness, and elegance (in that order of priority).
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InfluxDB
InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.
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oils
Oils is our upgrade path from bash to a better language and runtime. It's also for Python and JavaScript users who avoid shell!
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Lua
Lua is a powerful, efficient, lightweight, embeddable scripting language. It supports procedural programming, object-oriented programming, functional programming, data-driven programming, and data description.
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rocq
The Rocq Prover is an interactive theorem prover, or proof assistant. It provides a formal language to write mathematical definitions, executable algorithms and theorems together with an environment for semi-interactive development of machine-checked proofs.
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
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tlaplus
TLC is a model checker for specifications written in TLA+. The TLA+Toolbox is an IDE for TLA+.
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kuroko
Discontinued Dialect of Python with explicit variable declaration and block scoping, with a lightweight and easy-to-embed bytecode compiler and interpreter.
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
NOTE:
The number of mentions on this list indicates mentions on common posts plus user suggested alternatives.
Hence, a higher number means a better lean4 alternative or higher similarity.
lean4 discussion
lean4 reviews and mentions
Posts with mentions or reviews of lean4.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2024-10-10.
- Lean 4, Release v4.17.0
- Programming Language and Theorem Prover
- Lean: Programming Language and Theorem Prover
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LLMs don't do formal reasoning – and that is a problem
Correction, Lean4 [1] is sponsored by Amazon, the lead developer, Leonardo de Moura is at AWS now [2]. He was previously at Microsoft Research [3]. Meeting him is a real ride, I only had the chance to talk with him once.
[1] https://lean-lang.org/
[2] https://leodemoura.github.io/about.html
[3] https://www.microsoft.com/en-us/research/blog/the-inner-magi...
- Quantum Advantage for NP Approximation
- AI Will Become Mathematicians' 'Co-Pilot'
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The Fermat's Last Theorem Project
Lean is free and open source and nothing to do with MS. Check out https://lean-lang.org/ and https://github.com/leanprover/lean4 -- no mention of MS or MSR (where de Moura was where he developed Lean 3 and started on Lean 4).
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Dafny is a verification-aware programming language
Recently replaced by Lean, though.
https://github.com/cedar-policy/cedar-spec
https://lean-lang.org
- The Mechanics of Proof
- Natural Deduction in Logic (2015)
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A note from our sponsor - InfluxDB
www.influxdata.com | 24 Jun 2025
Stats
Basic lean4 repo stats
62
5,809
10.0
5 days ago
leanprover/lean4 is an open source project licensed under Apache License 2.0 which is an OSI approved license.
The primary programming language of lean4 is Lean.
Sponsored
InfluxDB – Built for High-Performance Time Series Workloads
InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.
www.influxdata.com