Showing 2449 open source projects for "rules engine java"

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  • 1
    Rules Engine

    Rules Engine

    A Json based Rules Engine with extensive Dynamic expression support

    A Json-based Rules Engine with extensive Dynamic expression support. RulesEngine is a highly extensible library to build a rule-based system using C# expressions. Rules Engine is a library/NuGet package for abstracting business logic/rules/policies out of a system. It provides a simple way of giving you the ability to put your rules in a store outside the core logic of the system, thus ensuring that any change in rules don't affect the core system. ...
    Downloads: 2 This Week
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  • 2
    Clara Rules

    Clara Rules

    Forward-chaining rules in Clojure(Script)

    Clara Rules is an expressive, forward-chaining rules engine written in Clojure (and ClojureScript), designed to let developers encapsulate domain logic cleanly and declaratively using rules defined as code rather than domain-specific languages—while supporting Java interoperability. Clara is a forward-chaining rules engine written in Clojure(Script) with Java interoperability.
    Downloads: 0 This Week
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  • 3
    Code Quality and Security for Java

    Code Quality and Security for Java

    SonarSource Static Analyzer for Java Code Quality and Security

    Hundreds of unique rules to find Java bugs, code smells & vulnerabilities. Sonar static analysis helps you build and maintain high-quality Java code. Covering popular build systems, standards and versions, Sonar elevates your coding game while keeping vulnerabilities at bay. With each Java version, we create dedicated rules so you learn shiny, new features and avoid pitfalls.
    Downloads: 0 This Week
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  • 4
    json-rules-engine

    json-rules-engine

    A rules engine expressed in JSON

    A rules engine expressed in JSON. json-rules-engine is a powerful, lightweight rules engine. Rules are composed of simple json structures, making them human-readable and easy to persist.
    Downloads: 0 This Week
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  • Atera all-in-one platform IT management software with AI agents Icon
    Atera all-in-one platform IT management software with AI agents

    Ideal for internal IT departments or managed service providers (MSPs)

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  • 5
    Wren Engine

    Wren Engine

    The Semantic Engine for Model Context Protocol(MCP)

    Wren Engine is a semantic engine designed to empower Model Context Protocol (MCP) clients and AI agents by providing accurate, contextual, and governed access to business data. It serves as a bridge between large language models (LLMs) and enterprise systems, facilitating seamless integration and interaction. ​
    Downloads: 2 This Week
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  • 6
    GraphHopper Routing Engine

    GraphHopper Routing Engine

    Open source routing engine for OpenStreetMap

    GraphHopper invests in an active open source community. Our flagships are the GraphHopper routing engine and jsprit, the toolkit for solving rich vehicle routing problems. We promote a fair & diverse mindset. jsprit is a Java based toolkit for solving rich traveling salesman problems (TSP) and vehicle routing problems (VRP). It is lightweight, flexible, easy-to-use, and based on a single all-purpose meta-heuristic. The GraphHopper routing engine is fast and memory-efficient, using Java.
    Downloads: 14 This Week
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  • 7
    GraphQL Java

    GraphQL Java

    GraphQL Java implementation

    ...The schema describes what queries are possible and what fields you can get back. (Note: when we refer to schema here, we always refer to a "GraphQL Schema", which is not related to other schemas like "JSON Schema" or "Database Schema") GraphQL Java is the Java (server) implementation for GraphQL. There are several repositories in the GraphQL Java Github org. The most important one is the GraphQL Java Engine which is the basis for everything else. The GraphQL Java Engine is only concerned with executing queries. It doesn't deal with any HTTP or JSON related topics.
    Downloads: 0 This Week
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  • 8
    Unicorn Engine

    Unicorn Engine

    Unicorn CPU emulator framework (ARM, AArch64, M68K, Mips, Sparc

    ...Another significant change on this version is the addition of some new APIs to allow better control on how the core engine works.
    Downloads: 2 This Week
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  • 9

    engine

    RDF Rule Engine for SASSY

    A general purpose rule engine for RDF. The rules are stored as RDF. Additional application specific processing can be added and incorporated into the rules. Rules can be edited using a text editor.
    Downloads: 0 This Week
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  • Connect every part of your business to one bank account Icon
    Connect every part of your business to one bank account

    North One is a business banking app that integrates cash flow, payments, and budgeting to turn your North One Account into one Connected Bank Account

    North One is proudly built for small businesses, startups and freelancers across America. Make payments easily, keep tabs on your money and put your finances on autopilot through smart integrations with the tools you’re already using. North One was built to make managing money easy so you can focus on running your business. No more branches. No more lines. No more paperwork. Get complete access to your North One Account from your phone or computer, wherever your business takes you. Create Envelopes for taxes, payroll, rent, and anything else automatically.
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  • 10
    Deep Java Library (DJL)

    Deep Java Library (DJL)

    An engine-agnostic deep learning framework in Java

    Deep Java Library (DJL) is an open-source, high-level, engine-agnostic Java framework for deep learning. DJL is designed to be easy to get started with and simple to use for Java developers. DJL provides native Java development experience and functions like any other regular Java library. You don't have to be a machine learning/deep learning expert to get started.
    Downloads: 1 This Week
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  • 11
    Hasura GraphQL Engine

    Hasura GraphQL Engine

    Blazing fast, instant realtime GraphQL APIs on your DB

    ...Developers and architects love Hasura because it takes no time to get started, doesn’t need them to be a GraphQL expert upfront, and saves their teams months of recurring effort in building, shipping, and maintaining their APIs. Hasura’s built-in RLS style authorization engine allows you to conveniently specify authorization rules at a model level, and safely expose the GraphQL API to developers inside or outside your organization. Hasura’s authz engine is enabling agile teams in fast-growing startups as well as powering mission-critical data access in highly regulated environments such as Fortune 500 healthcare, financial services and US federal agencies.
    Downloads: 0 This Week
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  • 12
    jMonkeyEngine

    jMonkeyEngine

    A complete 3-D game development suite written in Java

    jMonkeyEngine is a 3-D game engine for adventurous Java developers. It’s open-source, cross-platform, and cutting-edge. v3.6.1 is the latest stable version of the engine. The engine is used by several commercial game studios and computer-science courses.
    Downloads: 29 This Week
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  • 13
    Spotless

    Spotless

    Keep your code spotless

    Spotless is a tool for formatting and enforcing consistent code style in various languages, streamlining code quality across teams.
    Downloads: 3 This Week
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  • 14
    Database Lab Engine (DLE)

    Database Lab Engine (DLE)

    DLE provides blazing-fast database cloning to build dev environments

    Thin PostgreSQL clones. DLE provides blazing-fast database cloning to build powerful development, test, QA, staging environments. Follow to stay updated. The Database Lab Engine is an open-source experimentation platform for PostgreSQL databases. Instantly create full-size clones of your production database and use them to test your database migrations, optimize SQL, or deploy full-size staging apps. The Database Lab Engine (DLE) runs on an independent server within your own infrastructure....
    Downloads: 2 This Week
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  • 15
    Nipe

    Nipe

    An engine to make Tor network your default gateway

    Nipe is a Perl-based engine whose primary aim is to make the Tor network act as the default gateway for outgoing traffic. In practice, it configures system firewall rules (iptables) and network routing so that almost all IPv4 traffic is redirected through Tor. The tool provides commands such as install, start, stop, restart, and status to manage its behavior.
    Downloads: 2 This Week
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  • 16
    Meilisearch

    Meilisearch

    An open-source, lightning-fast, and hyper-relevant search engine

    An open-source, lightning-fast, and hyper-relevant search engine that fits effortlessly into your apps, websites, and workflow. Meilisearch is a flexible and powerful user-focused search engine that can be added to any website or application. Search-as-you-type returns answers in less than 50 milliseconds. That's faster than the blink of an eye! Deploy in a matter of minutes. Smart presets let you start searching through your data with zero configuration. Send data to Meilisearch however you...
    Downloads: 21 This Week
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  • 17
    WorkflowEngine.NET

    WorkflowEngine.NET

    WorkflowEngine.NET - component that adds workflow in your application

    WorkflowEngine.NET is a flexible workflow engine for .NET applications that supports visual process design and dynamic execution of business logic. It enables developers to model complex workflows with conditions, branching, and state transitions. The engine is highly customizable and can be embedded into any .NET project to automate tasks and decision-making.
    Downloads: 13 This Week
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  • 18
    ta4j

    ta4j

    A Java library for technical analysis

    ...We can calculate indicators over this bar series, in order to forecast the direction of prices through the study of past market data. Then we have to build our trading strategy. It is made of two trading rules, one for entry, the other for exit. Ta4j comes with a set of basic trading rules/strategies which can be combined using boolean operators. Trading strategies can be easily compared according to a set of analysis criteria. Ta4j can also be used for live trading with more complicated strategies.
    Downloads: 2 This Week
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  • 19
    Metacrafter

    Metacrafter

    Metadata and data identification tool and Python library

    ...These rules written as .yaml files and could be easily extended.
    Downloads: 0 This Week
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  • 20
    Bazel

    Bazel

    Fast, scalable, multi-language and extensible build system

    ...Share and re-use language rules written by the growing Bazel community. Bazel is the common build tool throughout Pinterest and has been instrumental in achieving fast, reproducible builds across our programming languages and platforms.
    Downloads: 132 This Week
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  • 21
    Nomulus

    Nomulus

    Top-level domain name registry service on Google Cloud Platform

    Nomulus is a production-grade, open-source domain registry platform used to operate top-level domains (TLDs). It implements the core registry protocols—EPP for registrar interactions, WHOIS/RDAP for public data access—and manages the lifecycle of domain objects, hosts, and contacts. The system is built to scale and to enforce policy: pricing rules, reserved names, premium tiers, grace periods, and automated renewals are modeled explicitly. It integrates with DNS provisioning, data escrow,...
    Downloads: 3 This Week
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  • 22
    Clash for Android

    Clash for Android

    Mobile counterpart to desktop Clash clients for Android

    Clash for Android is the mobile counterpart to desktop Clash clients, offering Android users a powerful proxy routing environment based on the Clash core, designed to let them control how network traffic is handled on their devices according to flexible rule sets. It provides a front end to define inbound and outbound proxy rules, supports various protocols like SOCKS5, Shadowsocks, V2Ray, and more, and lets users import configurations through URLs or local files, handling dynamic...
    Downloads: 255 This Week
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  • 23
    ModSecurity Nginx Connector

    ModSecurity Nginx Connector

    ModSecurity v3 Nginx Connector

    ModSecurity-nginx is the connector that embeds the ModSecurity v3 (libmodsecurity) web application firewall engine into NGINX. It integrates WAF processing into the NGINX request/response phases, allowing rules to inspect headers, bodies, and even streaming request data before it reaches upstream apps. Operators can load the OWASP Core Rule Set or custom rules to detect and block common attacks such as SQLi, XSS, RCE patterns, and protocol anomalies.
    Downloads: 0 This Week
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  • 24
    Event Ruler

    Event Ruler

    Java library that allows matching many thousands of Events per second

    Event Ruler (called Ruler in the rest of the doc for brevity) is a Java library that allows matching Rules to Events. An event is a list of fields, which may be given as name/value pairs or as a JSON object. A rule associates event field names with lists of possible values. Event Ruler is a Java library that allows matching many thousands of Events per second to any number of expressive and sophisticated rules.
    Downloads: 1 This Week
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  • 25
    Spectral

    Spectral

    A flexible JSON/YAML linter for creating automated style guides

    ...Spectral is open-source but is also baked into Stoplight, with extensions for VS Code and other integration options, giving you real-time feedback wherever you design APIs. Spectral can be used as a generic ruleset engine on any JSON or YAML data but was built with OpenAPI, AsyncAPI, and JSON Schema in mind. Use Spectral rules to target API descriptions for quality improvement or enforce API Style Guide rules, such as naming conventions for OpenAPI models or prohibiting integers in URLs.
    Downloads: 2 This Week
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