Search Results for "rules engine java"
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Showing 1804 open source projects for "rules engine java"
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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. ... -
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Forge: Magic: The Gathering Rules Engine
An unofficial rules engine for the world's greatest card game
Forge is a comprehensive open-source rules engine and gameplay platform designed to simulate and extend the card game Magic: The Gathering in a fully digital environment. Developed collaboratively by a community of contributors, it implements the vast majority of the game’s rules and card interactions, allowing players to experience both casual and competitive gameplay without official clients. -
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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. -
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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. -
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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. -
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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. -
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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. -
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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. -
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ziwei-doushu
Chinese astrology chart calculation engine
Ziwei Doushu is an open-source Chinese astrology chart calculation engine based on the traditional Zi Wei Dou Shu system and Ni Haixia's Tian Ji teachings. It generates birth charts using calendar calculations, star placements, and traditional astrological rules. The software includes the Four Transformations system, chart pattern recognition, and a knowledge base of classical interpretations. Birthplace coordinates and historical daylight saving adjustments support true solar time calculations. ... -
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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... -
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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. -
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Spotless
Keep your code spotless
Spotless is a tool for formatting and enforcing consistent code style in various languages, streamlining code quality across teams. -
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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. -
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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.... -
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Riot search
Go Open Source, Distributed, Simple and efficient Search Engine
...Support calculation BM25 correlation. Support custom scoring field and scoring rules. Support add online, delete index. Support heartbeat. Support multiple persistent storage. Support distributed index and search. Can be achieved distributed index and search. Look at Word segmentation rules. -
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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. -
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Metacrafter
Metadata and data identification tool and Python library
...These rules written as .yaml files and could be easily extended. -
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MiroFish
A Simple and Universal Swarm Intelligence Engine
MiroFish is a next-generation artificial intelligence prediction engine that leverages multi-agent technology and swarm-intelligence simulation to model, simulate, and forecast complex real-world scenarios. The system extracts “seed” information from sources such as breaking news, policy documents, and market signals to construct a high-fidelity digital parallel world populated by thousands of virtual agents with independent memory and behavior rules. -
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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. -
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Tally
Let agents classify your bank transactions
Tally is an open-source, AI-assisted tool designed to automate the classification of personal financial transactions, helping users turn raw bank data into meaningful categories without manual tagging. At its core, Tally pairs a local rule engine with large language models so that an AI assistant (like Claude Code, Copilot, or any CLI agent) interprets, suggests, and categorizes expenses, savings, subscriptions, and income events based on your own rules and behavior. It generates human-readable reports and can produce HTML, JSON, or Markdown outputs to suit dashboards or personal finance workflows. ... -
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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. -
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Ultracite
A highly opinionated, zero-configuration linter and formatter
Ultracite is a highly opinionated, zero-configuration linting and formatting preset designed primarily for modern JavaScript/TypeScript codebases. It is built on top of the Biome toolchain (written in Rust) and aims to deliver sub-second performance so that formatting and linting feel seamless, even on large projects. Because it comes pre-configured with sensible defaults for frameworks like React and Next.js, developers can adopt it with minimal setup—simply run npx ultracite init and start... -
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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. -
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Horizon
Horizon is Minecraft: Java Edition 26.3 rewritten in Rust
Horizon is an open-source reimplementation of Minecraft: Java Edition built from scratch in Rust, offering a native alternative to the original Java-based game. It recreates Minecraft's core gameplay mechanics, world generation, physics, mobs, redstone systems, and multiplayer functionality while maintaining compatibility with existing Minecraft worlds. Horizon includes a dedicated launcher that handles installation, updates, Microsoft account authentication, and game file preparation across... -
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AIOStreams
One addon to rule them all
AIOStreams is a “super-add-on” for Stremio that consolidates results from many add-ons and debrid services into a single, customizable feed. Instead of juggling multiple add-ons, you point AIOStreams at them; it then queries, merges, de-duplicates, and re-ranks everything according to your rules. The project includes a powerful filtering and sorting engine—think conditions on resolution, codec, provider, cached status, seed count, and more—so power users can shape results precisely. It also provides a template-based formatter to control how streams are labeled in the UI, complete with live preview for quick iteration. Catalog controls extend the same idea to the home page: rename, reorder, hide, shuffle, and enhance posters from supported metadata sources to unify your browse experience. ...
