Showing 209 open source projects for "rules engine"

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  • 1
    Cloud Custodian

    Cloud Custodian

    Rules engine for cloud security, cost optimization, and governance

    Cloud Custodian enables users to be well managed in the cloud. The simple YAML DSL allows you to easily define rules to enable a well-managed cloud infrastructure, that's both secure and cost-optimized. It consolidates many of the ad-hoc scripts organizations have into a lightweight and flexible tool, with unified metrics and reporting. Custodian supports managing AWS, Azure, and GCP public cloud environments. Besides just providing reports of issues, Custodian can actively enforce the...
    Downloads: 4 This Week
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  • 2
    HarfBuzz

    HarfBuzz

    Open source text shaping engine

    ...This shaping depends on a number of factors: the input string, the active font, the script (or writing system) of the string, and the string's language. Various font formats have their own set of standard text-shaping rules. With Harfbuzz, you can properly shape all the major writing systems. HarfBuzz is cross-platform and supports all major software platforms and font formats.
    Downloads: 10 This Week
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  • 3
    Kapacitor

    Kapacitor

    Open source framework for processing, monitoring, and alerting

    Open source framework for processing, monitoring, and alerting on time series data. Kapacitor is a real-time data processing engine for monitoring and alerting, specifically designed to work with time-series data from InfluxDB.
    Downloads: 6 This Week
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  • 4
    InfluxDB

    InfluxDB

    The open source time series database

    InfluxDB is an open source time series datastore designed to handle high write and query loads. Time series is currently the fastest growing database category there is, and InfluxDB is here to ensure businesses can keep up. InfluxDB provides infrastructure and application monitoring, IoT monitoring and analytics and more. It has APIs for storing and querying data, processing it in the background for ETL or monitoring and alerting purposes. This data can also be visualized, explored and more...
    Downloads: 13 This Week
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  • 5
    StackStorm

    StackStorm

    Connect all your apps, services, and workflows

    StackStorm is a platform for integration and automation for numerous services and tools. It takes actions in response to events, and is composed of a rules engine, workflow, and 160 integration packs with more than 6000 actions. This makes StackStorm very versatile, useful in a wide array of business applications. StackStorm can be used to automate and streamline nearly any part of a business. It can be used for automated remediation to immediately troubleshoot and fix problems when failures occur; it can be used for continuous deployment; it can create a fast and automated security response and so much more. ...
    Downloads: 3 This Week
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  • 6
    Goonstation

    Goonstation

    Repository for the Goonstation branch of SS13

    Goonstation is a community-maintained branch of the classic Space Station 13 (SS13) game, built on the BYOND / DMM / DM engine and custom code, with extensive maps, gameplay mechanics, user interfaces, and game modes. The repository houses the full game code, assets (maps, sound, icons, interface), configuration, and tools for running and contributing to a Goonstation server. It aims to offer a stable, feature-rich, roleplay/game environment with many custom systems (e.g., unique mechanics, items, server rules) layered atop the SS13 engine.
    Downloads: 0 This Week
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  • 7
    ClawRouter

    ClawRouter

    Smart LLM router

    ClawRouter is a flexible networking and routing framework designed to support AI-oriented distributed systems and agent ecosystems by managing how messages, requests, and responses are routed between components. It provides a programmable router abstraction that can handle complex traffic patterns, enabling dynamic message forwarding, load balancing, and custom routing logic based on content, context, or policy rules. Because distributed AI systems often involve many services, agents, and...
    Downloads: 2 This Week
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  • 8
    Rails Admin

    Rails Admin

    RailsAdmin is a Rails engine that provides an easy-to-use interface

    ...For many Rails apps, RailsAdmin provides a production-ready back office that saves weeks of bespoke tooling while remaining easy to extend when business rules get more complex.
    Downloads: 5 This Week
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  • 9
    The Tengo Language

    The Tengo Language

    A fast script language for Go

    ...Tengo is fast and secure because it's compiled/executed as bytecode on stack-based VM that's written in native Go. Securely Embeddable and Extensible. Compiler/runtime written in native Go (no external deps or cgo). Executable as a standalone language / REPL. Use cases, rules engine, state machine, data pipeline, transpiler. If you need to evaluate a simple expression, you can use Eval function instead.
    Downloads: 5 This Week
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  • 10
    Firefly III

    Firefly III

    Firefly III: a personal finances manager

    Firefly III is a personal finance manager and double-entry accounting tool built to help individuals and small organizations track budgets, investments, debts, and expenses. Users can import bank statements (CSV, OFX, QIF) or integrate via APIs, map transaction categories, and reconcile accounts. The system supports budgeting schedules, repeating transactions, automatic categorization rules, and reporting dashboards to analyze trends over time. For investments, it tracks price history,...
    Downloads: 13 This Week
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  • 11
    axe-core

    axe-core

    Accessibility engine for automated Web UI testing

    Axe is an accessibility testing engine for websites and other HTML-based user interfaces. It's fast, secure, lightweight, and was built to seamlessly integrate with any existing test environment so you can automate accessibility testing alongside your regular functional testing. Axe-core has different types of rules, for WCAG 2.0 and 2.1 on level A and AA, as well as a number of best practices that help you identify common accessibility practices like ensuring every page has an h1 heading, and to help you avoid "gotchas" in ARIA like where an ARIA attribute you used will get ignored. ...
    Downloads: 3 This Week
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  • 12
    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: 0 This Week
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  • 13
    Meteroid

    Meteroid

    Open-source pricing and billing infrastructure

    Meteroid is an open-source, cloud-native pricing and billing infrastructure designed to support usage-based billing, subscription management, invoicing, and cost-tracking — particularly for SaaS or product-led businesses that need flexible billing models beyond flat subscriptions. It provides an API-driven billing engine: you feed Meteroid usage data from your application (e.g. API calls, storage usage, seats, feature usage), define custom pricing rules or plans, and Meteroid calculates charges, generates invoices, tracks usage, and supports cost limits or quotas. The system is written in Rust, emphasizing performance, reliability, and safety, making it suitable for production use in small startups up to large enterprises. ...
    Downloads: 4 This Week
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  • 14
    XMage

    XMage

    Magic Another Game Engine

    XMage allows you to play Magic against one or more online players or computer opponents. It includes full rules enforcement for over 20 000 unique cards and more than 50.000 reprints from different editions. You can also find custom sets like Star Wars. All regular sets have nearly all implemented cards. It supports single matches and tournaments with dozens game modes like duel, multiplayer, standard, modern, commander, pauper, oathbreaker, historic, freeform and much more. Local server...
    Downloads: 12 This Week
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  • 15
    Project X

    Project X

    Originates from XTLS protocol, providing a set of network tools

    ...Project X also integrates advanced features like REALITY and XTLS, which enhance encryption and disguise traffic to improve privacy and resistance to detection. The platform is highly modular, allowing developers to customize routing rules, transport layers, and proxy behaviors through configuration files or integrations.
    Downloads: 19 This Week
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  • 16
    alphageometry

    alphageometry

    AI-driven neuro-symbolic solver for high-school geometry problems

    AlphaGeometry, developed by Google DeepMind, is a theorem-proving system that combines symbolic reasoning with deep learning to solve challenging geometry problems, such as those found in mathematical Olympiads. The repository provides the full implementation of DDAR (Deductive Difference and Abductive Reasoning) and AlphaGeometry, two automated geometry solvers described in the 2024 Nature paper “Solving Olympiad Geometry without Human Demonstrations.” AlphaGeometry integrates a symbolic...
    Downloads: 6 This Week
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  • 17
    openHAB Distribution

    openHAB Distribution

    The binary distribution of openHAB

    The open Home Automation Bus (openHAB) project aims to provide a universal integration platform for all things around home automation. It is a pure Java solution, fully based on OSGi. It is designed to be vendor-neutral as well as hardware/protocol-agnostic. openHAB brings together different bus systems, hardware devices, and interface protocols by dedicated bindings. These bindings send and receive commands and status updates on the openHAB event bus. This concept allows designing user...
    Downloads: 4 This Week
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  • 18
    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: 2 This Week
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  • 19
    CloudQuery

    CloudQuery

    The open-source cloud asset inventory powered by SQL

    ...Use standard SQL to find any asset based on any configuration or relation to other assets. Connect CloudQuery standard PostgreSQL database to your favorite BI/Visualization tool such as Grafana, QuickSight, etc. Codify your security & compliance rules with SQL as the query engine. Integrate CloudQuery with your current visualization, monitoring, and alerting such as Grafana. CloudQuery supports the TimescaleDB PostgreSQL extension, giving you full historical snapshots of your cloud asset inventory. Data analysis, security, auditing, and compliance. Leverage SQL to get visibility into your cloud infrastructure and SaaS applications. ...
    Downloads: 3 This Week
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  • 20
    IdentityServer

    IdentityServer

    The most flexible and standards-compliant OpenID Connect and OAuth 2

    ...IdentityServer gives you full control over your UI, UX, business logic, and data. In IdentityServer, customizing your workflows is not an afterthought. Our APIs and extensibility points allow adapting to your workflows and business rules without having to find complicated workarounds. You can choose whichever UI framework or technology suits you best to integrate with our token engine. We believe that C# is the best DSL, don't bother with trying to express your logic in YAML, XML, or other "languages". In short, if what you want to achieve is doable in .NET Core, it is doable with IdentityServer. ...
    Downloads: 0 This Week
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  • 21
    Memori

    Memori

    SQL-native memory layer enabling persistent context for AI agents

    Memori is an open source SQL-native memory engine designed to add persistent memory capabilities to AI applications, large language models, and multi-agent systems. It provides a memory layer that automatically captures conversations and interactions between users and AI models, allowing systems to retain knowledge across sessions instead of operating statelessly. It extracts structured information such as facts, preferences, rules, and summaries from interactions and stores them in standard SQL databases for later retrieval. ...
    Downloads: 0 This Week
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  • 22
    owllook

    owllook

    Vertical novel search engine with unified reading and tracking tools

    Owllook is an open source vertical search engine designed for discovering and reading online novels from multiple sources. Instead of redirecting users to different sites, the system parses content from many novel platforms and presents it in a unified reading interface. It focuses on providing a simple and comfortable reading experience with features such as searching for books, following updates, bookmarking chapters, and maintaining a personal bookshelf.
    Downloads: 0 This Week
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  • 23
    Arianne RPG

    Arianne RPG

    Arianne is an engine to develop multiplayer online games like Stendhal

    Arianne is a multiplayer online engine to develop turn based and real time games, providing a simple way of creating the game server rules and clients like our MORPG Stendhal. Our engine Marauroa uses Java and SQL for hosting hundreds of players on a solo host. Stendhal is a fun friendly and free multiplayer online adventure game with a huge and rich world. With hundreds of NPCs and different quests, features like the Travel log and achievement system keep track of progress. ...
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    Downloads: 197 This Week
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  • 24
    Jiyuu - Free Website Blocker for Windows

    Jiyuu - Free Website Blocker for Windows

    Jiyuu is a free open‑source, and strict website blocker for windows

    Jiyuu is a system-level desktop application designed to help users take back control of their time and attention. Built for individuals who are serious about breaking bad digital habits, Jiyuu combines a robust website and keyword blocking engine with real-time browser integration, behavioral analytics, and multiple layers of cheat-prevention — so your blocks actually hold. Whether you're trying to stay focused at work, reduce doom-scrolling, or build healthier screen habits, Jiyuu gives you the tools to enforce your own rules — even against yourself. How It Works Jiyuu operates as a strict system-level controller that manages blocking rules, analytics, and configuration from a central desktop interface. ...
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    Downloads: 17 This Week
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  • 25
    Woo State Calculator

    Woo State Calculator

    Create professional WooCommerce Measurement Price Calculators

    Create professional WooCommerce Measurement Price Calculators with live price updates. Perfect for flooring, fabric, wallpaper, concrete, fencing, roofing and any product sold by area, length or volume. Built on State.js for lightning-fast, reactive calculations without unnecessary frontend bloat.
    Downloads: 0 This Week
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