Browse free open source Java Algorithms and projects below. Use the toggles on the left to filter open source Java Algorithms by OS, license, language, programming language, and project status.

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  • 1
    Weka4OC GUI for Overlapping clustering

    Weka4OC GUI for Overlapping clustering

    Weka4OC: Weka for Overlapping Clustering is a GUI extending WEKA

    This is a GUI application for learning non disjoint groups based on Weka machine learning framework. It offers a variety of learning methods, based on k-means, able to produce overlapping clusters. The application also contains an evaluation framework that calculates several external validation measures. The application offers a visualization tool to discover overlapping groups.
    Downloads: 0 This Week
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  • 2
    Track your friends in real time on a map.. and many more features
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  • 3
    This application talks to a GPS device over the NMEA protocol via the WIGSGPSComm API. The first version of the WIGS application will present the GPS data in an intuitive fashion, and later releases will be further enhanced with special map support.
    Downloads: 0 This Week
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  • 4

    WiFi-Direct-File-Transfer-App

    This allows you to exchange data between devices

    WiFi Direct File Transfer is a experimental app that will allow sharing of data between Android devices running Android 4.0 or higher using a WiFi direct connection without the use of a WiFi access point. This will enable data transfer between devices without relying on any existing network infrastructure
    Downloads: 0 This Week
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  • 5
    Extract a Term Concept Map from Wikipedia. It takes an export of the Wikipedia and imports it into a database. The extracted term concept map can then serve as a basis for semantically enhancing applications, with the depth and bredth of the Wikipedia.
    Downloads: 0 This Week
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  • 6
    X's Recommendation Algorithm

    X's Recommendation Algorithm

    Source code for the X Recommendation Algorithm

    The Algorithm is Twitter’s open source release of the core ranking system that powers the platform’s home timeline. It provides transparency into how tweets are selected, prioritized, and surfaced to users, reflecting Twitter’s move toward openness in recommendation algorithms. The repository contains the recommendation pipeline, which incorporates signals such as engagement, relevance, and content features, and demonstrates how they combine to form ranked outputs. Written primarily in Scala, it shows the architecture of large-scale recommendation systems, including candidate sourcing, ranking, and heuristics. While certain components (such as safety layers, spam detection, or private data) are excluded, the release provides valuable insights into the design of real-world machine learning–driven ranking systems. The project is intended as a reference for researchers, developers, and the public to study, experiment with, and better understand the mechanisms behind social media content.
    Downloads: 0 This Week
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  • 7
    X-GAT
    X-GAT (XML-based Genetic Algorithm Toolkit) is a Java framework to optimize problems with Genetic Algorithms (GAs). Differently from other frameworks, X-GAT contains ready-to-use GAs implementations and new features can be easily added.
    Downloads: 0 This Week
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  • 8
    XMLMath evaluates mathematical, logical or textual expressions described in xml and prints the result. For example, to compute the result of 1 + 1, you would write: <add> <long value="1"/> <long value="1"/> </add>
    Downloads: 0 This Week
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  • 9
    A Java collections framework based on set theory, specifically, from Spivey's work on the Z notation (a formal specification language).
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  • 10
    Yagnus attempts to provide you with useful software and libraries for more modern computing purposes.
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  • 11

    Zero Sum Game Solver Java Library

    Zero Sum Game Solver Java Library

    Zero Sum Game Solver Java Library is open source java library to solve 2-player finite zero-sum games. This programs solve zero-sum games with linear programming.
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  • 12
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  • 13

    algebrain

    Math Parser for Java

    Moved to GitHub https://github.com/fedups Algebraic equation processing at run time for Java programs. Supports variables, functions with parameters, rate table lookups, an embedded "if" function... Infinitely extensible, very small footprint.
    Downloads: 0 This Week
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  • 14
    barde
    A log player for "The Fourth Coming" ("T4C", http://www.the4thcoming.com). Given a log-file, this tool will replay a T4C game you've played before. It will have built-in functionnalities like : merging log files together, searching and cleaning
    Downloads: 0 This Week
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  • 15
    brCluster is a class library, written in java, that implements generic clustering algorithms carefully designed to allow its aplication in any kind of data. The algorithms implemented are K-means and Hierarchical Clustering (Simple and Complete Link).
    Downloads: 0 This Week
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  • 16
    cachelet

    cachelet

    Cachelet - the simplest java framework for general purpose caching

    Cachelet is a java framework for general purpose caching very simple and easy to use. And it has everything you need for caching without complications.
    Downloads: 0 This Week
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  • 17
    A 2D rigid physics simulator and set of genetic algorithm tools. Evolve cute little walking creatures.
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  • 18
    Codefactor utilities: ReflectionThread, ObjectParser
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  • 19
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  • 20
    cosmos

    cosmos

    Algorithms that run our universe | Your personal library of every algo

    Cosmos (by OpenGenus Foundation) is your personal offline collection of every algorithm and data structure one will ever encounter and use in a lifetime. This provides solutions in various languages spanning C, C++, Java, JavaScript, Swift, Python, Go and others. This work is maintained by a community of hundreds of people and is a massive collaborative effort to bring the readily available coding knowledge offline.
    Downloads: 0 This Week
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  • 21
    This project aim to provide a crowd movement simulation based on primitive human behaviours and emerging behaviours for research and educational purposes. The application (front-end) is generic and can be reused.
    Downloads: 0 This Week
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  • 22

    deapheap

    Deap is a doubly heap for both min and max number access.

    A deap is a doubly priority queue for efficient data operations. Both insertion and deletion operations take O(log(N)) time. Access of min or max takes constant time. It can be useful when both min and max are needed in the queue. It can also be used in situations where the number of items is too large and items with low priorities can be dropped with keep memory footprint small.
    Downloads: 0 This Week
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  • 23
    Progetto dejackiv in fase di pianificazione
    Downloads: 0 This Week
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  • 24
    distDES is a Java RMI-based application which manages load balancing on heterogeneous clusters. Development will extend the theoretical initial implementation to include clustered Rainbow Table generation and encryption algorithm collision detection.
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  • 25
    dlite is a small footprint description logic reasoner. The purpose of this project is to allow developers to easily integrate the description logic reasoning technology in their applications in order to characterize and classify complex system states.
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