Drools is a rule engine, DMN engine and complex event processing (CEP) engine for Java.

The simple, stupid rules engine for Java

🐝 IoT Technical Guide --- 从零搭建高性能物联网平台及物联网解决方案和Thingsboard源码分析 ✨ ✨ ✨ (IoT Platform, SaaS, MQTT, CoAP, HTTP, Modbus, OPC, WebSocket, 物模型，Protobuf, PostgreSQL, MongoDB, Spring Security, OAuth2, RuleEngine, Kafka, Docker)

A rules engine expressed in JSON

Rules engine for .NET, based on the Rete matching algorithm, with internal DSL in C#.

The Hoa\Ruler library.

Node-rules is a light weight forward chaining rule engine written in JavaScript.

Rule engine implementation in Golang

JetLinks 基于Java8,Spring Boot 2.x ,WebFlux,Netty,Vert.x,Reactor等开发, 是一个全响应式的物联网平台。支持统一物模型管理,多种设备,多种厂家,统一管理。统一设备连接管理,多协议适配(TCP,MQTT,UDP,CoAP,HTTP等),屏蔽网络编程复杂性,灵活接入不同厂家不同协议等设备。实时数据处理,设备告警,消息通知,数据转发。地理位置,数据可视化等。能帮助你快速建立物联网相关业务系统。

A rule engine written in Ruby.

JetLinks Core

Open Source Data Management Software

A lightweight IoT edge analytics software

yet another query language for rule engine in golang

Rule Engine for Golang

Predicate logic with rule composition

react-jsonschema-form-conditionals

An open-source IoT platform that enables rapid development, management and scaling of IoT projects. With this IoT platform, you are able to: 1) Provision and control devices, 2) Collect and visualize data from devices, 3) Analyze device data and trigger alarms, 4) Deliver device data to other systems, 5) Enable use-case specific features using customizable rules and plugins.

Groovy based lightweight rule engine

PHP Rule Engine - Parses & Evaluates JavaScript-like expressions

A pragmatic business rule management system

Golang Rule Engine

EMQ X Rule Engine

基于流程,事件驱动,可拓展,响应式,轻量级的规则引擎。

A small rule engine for Node.

golang RETE algorithm

Symfony Bundle for RulerZ

Yet another rules engine, but simpler to use!!