expression-language

Fast, portable, non-Turing complete expression evaluation with gradual typing (Java)

AI-native declarative form specification — JSON-driven fields, validation, expressions, themes, and components

A browser-native application runtime for building SPAs and micro-frontends by extending HTML and JavaScript with declarative application features.

Fast, portable, non-Turing complete expression evaluation with gradual typing (Go)

🤖 Preserve session state in Claude Code with TURING, ensuring cognitive continuity for long AI-assisted development sessions.

Kavun is a lightweight, high performance, embeddable scripting language for Go, featuring first-class records, lambda-based pipelines, f-strings, and a sandboxable VM.

Date-Time Range & Recurrence Expression — a compact string expression for describing "when", evaluated by coverage.

Tiny and CSP-safe expression language for JavaScript

A faithful Rust port of Apache Commons JEXL 3.2.1, verified case by case against the Java jar

A safe, zero-dependency expression language for rules, filters, and templates

A typed, async-first configuration expression language for Python. Lazy evaluation, contextual values, and dependency inspection.

A Lightweight Java business rule expression language.

TypeScript expression parser and evaluator for application-defined filters, conditions, and formulas.

Expression evaluation in golang

A data-structure parameterization system written for embedding context in JSON objects

Pure-Go JSONata 2.2 implementation with concurrent, context-aware evaluation

Zero-dependency TypeScript implementation of Symfony's Expression Language. Safely parse and evaluate dynamic expressions in Node and the browser, with ESM/CJS/UMD builds and full typings.

Common Expression Language for .NET

➡️ Arrow function support in Symfony Expression Language