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

  • Auth for GenAI | Auth0 Icon
    Auth for GenAI | Auth0

    Enable AI agents to securely access tools, workflows, and data with fine-grained control and just a few lines of code.

    Easily implement secure login experiences for AI Agents - from interactive chatbots to background workers with Auth0. Auth for GenAI is now available in Developer Preview
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  • MongoDB 8.0 on Atlas | Run anywhere Icon
    MongoDB 8.0 on Atlas | Run anywhere

    Now available in even more cloud regions across AWS, Azure, and Google Cloud.

    MongoDB 8.0 brings enhanced performance and flexibility to Atlas—with expanded availability across 125+ regions globally. Build modern apps anywhere your users are, with the power of a modern database behind you.
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  • 1
    Delphi : VRCalc++ OOSL (Script) and more

    Delphi : VRCalc++ OOSL (Script) and more

    Delphi : VRCalc++ OOSL & + (Paged List, TextEditor, VRAstroVision ...)

    Vincent Radio {Adrix.NT} Sources Library & Applications : Delphi C++ Java VRCalc++ C# VRCalc++ Object Oriented Scripting Language - Engine Source Pascal Code - Delphi Packages Build Prjs - VRCalc++ Scripted System Std RT Library - Guides & Docs (CHM, PDF, DOCX) - VCL & FMX (FireMonkey) Support - Script Test Code (Lang RTL VCL FMX) - Visual Stage Project : VCL & FMX Paged Lists & Iterators : Delphi C++ Java C# Multi-Dim Arrays & Direct Graph Classes : Delphi C++ Java VRCalc++ C# Delphi Drag&Drop Applications - VRCalc++ Script Executors: Terminal, VCL, FMX - VRMultiEdit - VRLazyCodeEditor - VR Astro Vision (Astrology) - Paged List Test - VRMosaic : Delphi C++Builder Java C# +with auto resolver - VR Free Chess 2D - VRBlocks - VRGraphStage - VR TTT OX + icons & bitmaps + VCL VisualStyles + Build Projects + instructions to build projects to build projects - Delphi : RAD Studio - C++ : Dev-C++ - java : NetBeans - C# : MS/VS adrixnt@hotmail.it
    Downloads: 5 This Week
    Last Update:
    See Project
  • 2
    ExpressionJ is a Java library allowing to interpret simple numeric expressions, which may be used in all applications which have to combine numeric values, but do not want to use full-blown scripting languages.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 3
    JIProlog

    JIProlog

    Java Internet Prolog (Moved to GitHub)

    N.B. THE PROJECT HAS BEEN MOVED TO GITHUB https://github.com/jiprolog/ JIProlog is a cross-platform pure Java 100% Prolog interpreter that integrates Prolog and Java languages in a very fashinating way. JIProlog is compliant with the major Prolog interpreters. It supports most of ISO Prolog specifications and the most common and used built-in predicates, JIProlog allows to call Prolog predicates from Java without dealing with native code (JNI or JNA) and allows to invoke Java methods from Prolog in the same way you call predicates.
    Downloads: 0 This Week
    Last Update:
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  • 4
    JME (Java Math Expression)

    JME (Java Math Expression)

    Evaluador de expresiones matemáticas para Java en español

    Biblioteca para Java que implementa un potente evaluador matemático en español y un lenguaje estructurado de script, JMEScript, que hace uso de éste. Puede evaluar expresiones altamente complejas, que incluyen; * vectores * matrices * números complejos * números enteros y reales de precisión arbitraria, * expresiones booleanas * conjuntos * cadenas * diccionarios * grafos * correspondencias y relaciones finitas Permite especificar operaciones y funciones definidas por el usuario además de incluir más de 60 operadores predefinidos y más de 450 funciones predefinidas. También implementa un potente modo REPL que permite usar interactivamente la mayoría de características del lenguaje implementado por la biblioteca JME, incluida la importación y exportación CSV, HTML, JSON y XML. Puede consultarse la documentación de usuario y de desarrollador en la página https://miguelalejandromorenobarrientos.github.io/JmeDoc/ IDE JMEScriptGUI https://sourceforge.net/projects/j
    Downloads: 0 This Week
    Last Update:
    See Project
  • Build Securely on AWS with Proven Frameworks Icon
    Build Securely on AWS with Proven Frameworks

    Lay a foundation for success with Tested Reference Architectures developed by Fortinet’s experts. Learn more in this white paper.

    Moving to the cloud brings new challenges. How can you manage a larger attack surface while ensuring great network performance? Turn to Fortinet’s Tested Reference Architectures, blueprints for designing and securing cloud environments built by cybersecurity experts. Learn more and explore use cases in this white paper.
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  • 5
    Multi-language library to deal with multimethod dispatch, disambiguation and type-checking using dispatch tables. This approach yields fast dispatch in constant-time and greatly helps resolving ambiguities.
    Downloads: 0 This Week
    Last Update:
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  • 6

    OverlappingTreesPlainMap

    The utility for quickest manipulations with difficult data.

    This is Java library for working with overlapping trees both as with plain memory and as with hierarchical structure, with quick access to any levels and branches of tree (<page><...><section><line><word>tooLongWordForCurrentLi</line></page><page><line>neAndSectionTwoPages</word></line></section><...></page> (incorrect in classic XML)). There supported the cross-references (from="@leftPanel#template" target="$template"); cursors;copying and removing of parts; functionality to index and search data; convenient factory of dynamic generation of values and parts of data; simple variables and any objects as values and as unnamed data for manipulating. Every object of this container is an child of any numbers of trees and has dynamic address. The utility is not demanding to resources, requires no extraneous libraries and can be deployed in a small memory. It can run on mobile devices. Do not use linear algorithms, the speed is only slightly dependent on the size of data.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 7
    UJAC is a collection of Java components that may be useful for your project. It provides a powerful expression interpreter, a iText based document processing engine that generates PDF documents based on XML templates, a charting library and much more.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 8
    Administrative WebSphere library. Designed as a foundation library (providing a wsadmin.sh wrapper) following Object Oriented approach for WebSphere administrators who are used to develop Python scripts to do WebSphere adrministrative tasks.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 9

    date-parser

    Rule Interpreter for natural date descriptions

    Date Rule Interpreter for date descriptions like 'next sunday' and 'the day before christmas'
    Downloads: 0 This Week
    Last Update:
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  • Build apps or websites quickly on a fully managed platform Icon
    Build apps or websites quickly on a fully managed platform

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  • 10
    Jexpel is a library of compiling and execution of expressions for java whose the syntax is compatible with some of most popular expression languages.
    Downloads: 0 This Week
    Last Update:
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