a simple boolean expression engine using reparse
Secure, isolated expression evaluation runtime for n8n
ObjectStack canonical expression engine — CEL (cel-js) + ObjectStack stdlib + dialect registry
NCalc expression evaluator
BareScript; a lightweight scripting and expression language
Mathematical expression evaluator
Functions and constants for SimplEx expression language
Urturn.com expression API
An expression tokenizer, parser and evaluator.
OCL (Object Constraint Language) expression engine for TypeScript — lexer, parser, evaluator, and validator
Complete FEEL (Friendly Enough Expression Language) implementation — parser, evaluator, and highlighter
A powerful math expression parser and evaluator with runtime data-type checking
GoRules ZEN expression runtime and shared condition operators for VEF framework
Zero-dependency safe arithmetic expression evaluator: parse/evaluate math formulas with variables and functions, no eval(). TypeScript-first, ESM+CJS. Port of Python simpleeval / Go expr / C# DynamicExpresso.
A powerful Vue 3 mathematical expression editor component
SimplEx - simple expression language
Drag-and-drop-enabled version of react-querybuilder (DnD-library-agnostic)
Custom Chakra UI components for react-querybuilder
Custom Ant Design components for react-querybuilder
Custom Bootstrap components for react-querybuilder
Custom Bulma components for react-querybuilder
bindingx,expression,binding,weex
Suspendable Evaluation Engine Built with Opus — a typed, suspendable expression/template engine with a pure synchronous core.