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.

  • Passwordless Authentication and Passwordless Security Icon
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    Build Securely on Azure with Proven Frameworks

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  • 1
    The ftp4j library implements a Java full-featured FTP client. With ftp4j embedded in your application you can: transfer files (upload and download), browse the FTP site (directory listing), create, delete, rename and move directories and files.
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    Downloads: 10 This Week
    Last Update:
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  • 2
    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
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    Downloads: 4 This Week
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  • 3
    Microproperties is a flexible and extensible library for dealing with properties in applications written in Java ME (former J2ME). Read properties from MIDlet Manifest/JAD, a textfile or over internet via a URL. Set properties as never before in Java ME.
    Downloads: 14 This Week
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  • 4

    JavaGimmicks

    Utility classes, APIs and tools for Java

    A set of helper and utility classes, APIs and tools for the Java Programming Language. For more details - pleas visit the project homepage.
    Downloads: 1 This Week
    Last Update:
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  • Build Securely on AWS with Proven Frameworks Icon
    Build Securely on AWS with Proven Frameworks

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  • 5
    "Active Collections" is an API written by extending existing collection framework provided in JDK. This API will facilitate the consumer of a collection to handle events whenever the collection is modified.
    Downloads: 0 This Week
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  • 6
    The Amethyst Network Library is a Java-based network library developed specifically for the Java platform. This library can be used within any Java application to streamline and abstract the I/O of Java Sockets.
    Downloads: 0 This Week
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  • 7
    BrAPI is a Java API for brazillian developers with a couple of utilities to use with date,money,conversors,validators and factories.
    Downloads: 0 This Week
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  • 8
    Set of Java libraries to ease common development tasks in an application, such as working with resource files, input validation, background processing, observing property changes, etc.
    Downloads: 0 This Week
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  • 9

    Empact Foundation Class Library

    Cross-platform C++ library for use as a default application framework.

    A mature cross-platform C++ library for use as a default application framework. Features include: * Threading & synchronization * Socket programming: SSL, NanoMsg & ZMQ * File I/O utilities: zlib, ini, yaml * Native Database access: MySQL, SQLite, BerkleyDB, Postgre, REDIS and ODBC * Built-in mini XML parser; optional EXPAT, LIBXML and MSXML support * Network protocol stack: HTTP, FTP, SMTP, POP3, SOAP, XMLRPC * Scripting languages: Perl, Python, JavaScript, VBScript, Java, Lua, TCL, Squirrel * Cloud Computing: AWS * Encryption: OpenSSL * Platforms: Linux/Posix, Windows, Arduino * Over 500+ highly reusable classes. 4000+ fully documented functions. Follow the 'Wiki' link above to explore everything about the framework.
    Downloads: 0 This Week
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  • 10
    You know the component scanning feature of Spring? You'll love this: component scanning as easy as select(javaClasses()).from("your.package").returning(allAnnotatedWith(YourAnnotation.class)). Can support any language running on the JVM. ---------- eXtcos is now also available from Maven Central. To include it into your Maven project just add this dependency: groupId: net.sf.extcos artifactId: extcos version: 0.4b Unfortunately Sourceforge doesn't support XML snippets in the description, so you'll have to build it yourself if needed. ----------- To read the user manual click the website link below.
    Downloads: 0 This Week
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  • 11

    Flaat

    A new GUI development framework

    This project aims to develop a new GUI design experience with platform independent "Look and Feel". The aim of a this project is to develop a java library which shall be able to use with any type of software developed in java.
    Downloads: 0 This Week
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  • 12
    FormulaOneSDK is a open source project which provides low level SDK including FormulaOneCommon Project, FormulaOneConcurrent Project, FormulaOneGUI Project, FormulaOneJ2EE Project, FormulaOneLog Project and FormulaOneThread Project to other projects.
    Downloads: 0 This Week
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  • 13

    Hibersap

    A Java library to communicate with SAP

    Hibersap helps developers of Java applications to call business logic in SAP backends. It defines a set of Java annotations to map SAP function modules to Java classes as well as a small, clean API to execute these function modules and handle transaction and security aspects. Hibersap's programming model is quite similar to those of modern O/R mappers, significantly speeding up the development of SAP interfaces and making it much more fun to write the integration code. Under the hood, Hibersap either uses the SAP Java Connector (JCo) or a JCA compatible resource adapter to communicate with the SAP backend. While retaining the benefits of JCo and JCA like transactions, security, connection pooling, etc., developers can focus on writing business logic because the need for boilerplate code is largely reduced.
    Downloads: 0 This Week
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  • 14

    Impressora Plugin

    Implementação de uso simples para impressoras não fiscais

    Com essa biblioteca você pode implementar de forma simples o uso de mini impressoras não fiscais das marcas mais usadas no mercado
    Downloads: 0 This Week
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  • 15

    J7Win

    A Java Wrapper for Windows API functions.

    This project is a set of Java wrapper classes for Win32 API functions. There is a parallel project called J7Linux which is the equivalent for Linux/Unix systems.
    Downloads: 0 This Week
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  • 16
    JAgile (or "Java Agile") is a simple but practical framework in Java. It implements some JEE Patterns as Transfer Object, Session Facade, Business Object, DAO Factory and DAO. Its unique persistence implementation is the Hibernate Framework.
    Downloads: 0 This Week
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  • 17

    Java Validation Framework

    Java validation framework (not JSR-303 implementation).

    This framework allows to modify (correct) test values; supports validation of localized values; allows to convert values into and from text representation; formats error messages, depending on the context; supports metadata, which allows to check any entity types (not only Java Beans or POJOs) and more. Also this framework has long list of predefined validation components.
    Downloads: 0 This Week
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  • 18

    Lnkdlst

    Single sided linked list (kind of lib with test-code, C, C++ and java)

    Use own (user) data section for each Linked-List-Element (LLEl) including a fix Identifier which is for search via basic Lnkdlst function (fast ID-part-search, e.g. to find all elements with a specific bit in the ID set). Main list-linkage-change functions: append, insert, delete. - Examples: use of flexible variable ArgList (OnePointerArg, optional valid if not NULL, Argument-Type by ID-Number is easy to get), key-value pairs, build FIFO{queue}/LIFO{stack}, auto-list with max. Element-Size and chronological order. Use malloc{slower-but-easy} or fix (static) memory. - OAList01: Object-Kind of a predefined pre-reserved List with X Elements (with constant user-data size), with secur modify functions and option to use locks (POSIX: mutex). Supporting a BusyList and a IdleList for easy build of e.g. a FIFO without need of much time for mem-allocation. - Release-Notes see uws-Lnkdlst-readme.txt in the tar.gz file(s) and in „Files“.
    Downloads: 0 This Week
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  • 19
    Java library for constructing embedded parsers. A parser is constructed by Java objects. A fluent interface API helps to define the grammar in an EBNF-like style. No Java source code will be generated. ParCinJ is suitable domain specific languages (DSL).
    Downloads: 0 This Week
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  • 20
    this is a small JSP tag library which allows you to create PDF documents within your JSPs. All you need to do is add the jar file to your lib folder under WEB-INF and the tld file in a tld folder under WEB-INF and you are ready to use the tags.
    Downloads: 0 This Week
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  • 21
    Automatically provides configurable implementations of the equals(Object), hashCode() and toString() methods inherited from java.lang.Object This project has moved to github: https://github.com/irobertson/pojomatic
    Downloads: 0 This Week
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  • 22
    RedRoo implements a framework for defining and executing hierarchical state machines. As a Red Kangaroo jumps from place to place, RedRoo will transition your application from state to state feeding on the events you pass to it. So get jumping!
    Downloads: 0 This Week
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  • 23
    Simple but powerful Ruby-style collections and closures implemented with Java 5 features and fine object-oriented design.
    Downloads: 0 This Week
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  • 24
    A gathering of reusable Java classes that I've found useful over the years, in a similar vein to Apache Commons.
    Downloads: 0 This Week
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  • 25
    RonFX-2009-Beans
    Consist of small but usable Java source code or libraries for rookies or intermediate Java developers.
    Downloads: 0 This Week
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