cedar-spec
| symmetric_project | cedar-spec | |
|---|---|---|
| 1 | 3 | |
| 78 | 70 | |
| - | - | |
| 9.1 | 9.2 | |
| 6 months ago | 3 days ago | |
| Lean | Lean | |
| - | Apache License 2.0 |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
symmetric_project
-
Lean4 helped Terence Tao discover a small bug in his recent paper
You can even follow his progress on GitHub here:
https://github.com/teorth/symmetric_project/
cedar-spec
-
Dafny is a verification-aware programming language
Recently replaced by Lean, though.
https://github.com/cedar-policy/cedar-spec
https://lean-lang.org
- Opal – an open source cross-language policy administration tool
-
Lean4 helped Terence Tao discover a small bug in his recent paper
Note that the Z3 SMT solver was written by Leonardo de Moura, who also is the lead dev of Lean 4. Not a coincidence (-;
Lean 4 seems to be used in production at AWS: https://github.com/cedar-policy/cedar-spec/pull/138
What are some alternatives?
dafny - Dafny is a verification-aware programming language
OPAL - Policy and data administration, distribution, and real-time updates on top of Policy Agents (OPA, Cedar, ...)
Idris2 - A purely functional programming language with first class types
idris2-pack-db
CoqGym - A Learning Environment for Theorem Proving with the Coq proof assistant
CodeContracts - Source code for the CodeContracts tools for .NET
openfga - A high performance and flexible authorization/permission engine built for developers and inspired by Google Zanzibar
FStar - A Proof-oriented Programming Language
z3 - The Z3 Theorem Prover