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

HyperFormula is an open-source headless spreadsheet for business web apps. It comes with over 400 formulas, CRUD operations, undo-redo, clipboard support, and sorting.

pydata / numexpr

Fast numerical array expression evaluator for Python, NumPy, Pandas, PyTables and more

dynamicexpresso / DynamicExpresso

C# expressions interpreter

codeplea / tinyexpr

tiny recursive descent expression parser, compiler, and evaluation engine for math expressions

langchain-ai / openevals

Readymade evaluators for your LLM apps

Mathics3 / mathics-core

An open-source Mathematica Kernel. This repository contains the Python modules for WL Built-in functions, variables, core primitives, e.g. Symbol, a parser to create Expressions, and an evaluator to execute them.

ncalc / ncalc

NCalc is a fast and lightweight expression evaluator library for .NET, designed for flexibility and high performance. It supports a wide range of mathematical and logical operations.

ezylang / EvalEx

EvalEx is a handy expression evaluator for Java, that allows to evaluate simple mathematical and boolean expressions.

rubysolo / dentaku

math and logic formula parser and evaluator

mariuszgromada / MathParser.org-mXparser

Math Parser: Java, C#, C++, Kotlin, Android, and all .NET platforms (Nuget, Maven, CMake). Supports .NET Framework, .NET Core, .NET Standard, Xamarin, and more. Features: rich built-in library of math functions, operators, constants. Flexible in user-defined arguments, functions. Expressions provided as plain text. Easy to use. Well documented.

jpmml / jpmml-evaluator

Java Evaluator API for PMML

danthedeckie / simpleeval

Simple Safe Sandboxed Extensible Expression Evaluator for Python

NVIDIA / SkillEvaluator

Multi-tier framework for evaluating AI agent skills with quality gates, semantic overlap detection, synthetic evaluation dataset generation, and live agent evaluation that measures how skills affect agent behavior.

dbt-labs / dbt-project-evaluator

This package contains native dbt checks to report and fix issues in your dbt project

jiggzson / nerdamer

a symbolic math expression evaluator for javascript

HenryRLee / PokerHandEvaluator

Poker-Hand-Evaluator: An efficient poker hand evaluation algorithm and its implementation, supporting 7-card poker and Omaha poker evaluation

uoftcprg / pokerkit

An open-source Python library for poker game simulations, hand evaluations, and statistical analysis

jsdhwfmax / EvalForge

Evaluator-neutral AI evaluation evidence, baseline regression gates, and JSON, JUnit, and SARIF reports for CI.

danielgshea / jev-as-a-judge

Using Jev as an evaluator.

numtide / iets

Fast Nix evaluator and remote-build client in Rust

shift-labs-ai / pi-rlm

A pi extension with a single tool: execute, running TypeScript in a persistent Bun evaluator. Files, shell, and subagents are expressed as code rather than as more tools.

Git-on-my-level / self-improving-agent-ecosystem

Reference architecture, contracts, skills, and fixtures for safe evaluator-driven self-improving ecosystems.

HongyeYangGT / Part_HackBench

A stress-testing benchmark for partial-completion evaluators in stateful multi-turn agents, focusing on temporary progress, rollback, and attribution failures.

Archive228 / adversarial-contract-gate

Self-evaluation is a trap — grade against a contract with a separate evaluator. Built from Anthropic's 'Build Agents That Run for Hours' (39:00). No deps, ./run.sh, 9 tests.