LegalOSS179.4ktracked
Submit a project

Rules as Code

Computational law: statutes, tax, and contracts as executable code.

13 projects
Featured
LegalWork100 · TypeScript · AI Platforms & Workbenchesopen-us-law57 · Python · Retrieval & RAGArthurLegal11 · Contracts & AnalysisLegalMemory33 · Python · MCP Serversmike4.2k · TypeScript · Legal AI & NLP
Rules as Code
mon-entreprise
betagouv/mon-entreprise

Official French entrepreneur assistant

3301012d agoTypeScript
Rules as Code
catala
CatalaLang/catala

Language for literate programming of law

2.4k10744m agoOCaml
Document Automation · Contracts & Analysis
template-archive
accordproject/template-archive

Smart legal contracts and templating

3641883d agoTypeScript
Legal Research & Search · Rules as Code
openfisca-france
openfisca/openfisca-france

French tax and benefit system as code

31111414d agoPython
Rules as Code
Tax-Calculator
PSLmodels/Tax-Calculator

US federal tax microsimulation model

3111663d agoPython
Rules as Code
Open-Cap-Format-OCF
Open-Cap-Table-Coalition/Open-Cap-Format-OCF

Open cap table data standard

1864527d agoTypeScript
Document Automation · Contracts & Analysis
techdocs
accordproject/techdocs

Accord Project documentation

1082061mo agoCSS
Rules as Code · Compliance & Privacy
lemma
lemma/lemma

Declarative language for business rules

5621d agoRust
Document Automation · Contracts & Analysis
CommonAccord
CommonAccord/Cmacc-Org

Modular contract text and rendering codebase

512922d agoHTML
Legal Research & Search · Case Law & Legal Data
AuthoritySpoke
mscarey/AuthoritySpoke

Reading legal authority programmatically

4422mo agoPython
MCP Servers · Contracts & Analysis
l4-ide
smucclaw/l4-ide

L4 legal DSL development environment

3791mo agoHaskell
Contracts & Analysis · Rules as Code
models
accordproject/models

Accord Project model repository

33473d agoJavaScript
Citations & Parsing · Rules as Code
nomos
sboghossian/nomos

Nomos — a programming language for legal reasoning. Typed rules with jurisdiction and validity dates, LLM-powered fact extraction, defeasible logic, proof trees that cite statutes and cases. Apache-2.0. Experimental.

2154mo agoTypeScript
For maintainers

Build one of these? Verify ownership through GitHub and take over your project's page: tagline, categories, maintainer's note.

How claiming works