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

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  • 1

    OpenXava

    Automatic frontend engine for Java

    Automatic frontend engine for Java. Write just the domain classes in plain Java. Get a web application ready for production.
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    Downloads: 49 This Week
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  • 2
    Prophecy

    Prophecy

    Highly opinionated mocking framework for PHP 5.3+

    Prophecy is a highly opinionated yet very powerful and flexible PHP object mocking framework. Though initially it was created to fulfil phpspec2 needs, it is flexible enough to be used inside any testing framework out there with minimal effort. First, add Prophecy to the list of dependencies inside your composer.json, then, simply install it with composer. First of all, in Prophecy every word has a logical meaning, even the name of the library itself (Prophecy). When you start feeling that, you'll become very fluid with this tool. For example, Prophecy has been named that way because it concentrates on describing the future behavior of objects with very limited knowledge about them. But as with any other prophecy, those object prophecies can't create themselves, there should be a Prophet. Prophecy enforces same method prophecies and, as a consequence, same promises and predictions for the same method calls with the same arguments.
    Downloads: 6 This Week
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  • 3
    STD Foundation Classes

    STD Foundation Classes

    Object oriented frameworks - PowerBuilder, PowerServer & InfoMaker!

    by Chris Pollach (http://chrispollach.blogspot.ca) A fully integrated "object oriented" set of PB Classes for the following products: PowerBuilder, PowerClient & PowerServer. The framework greatly enhances the development process by making the PowerBuilder developer significantly more productive! License: https://sourceforge.net/projects/stdfndclass/files/License (Open Source) => Updated version of the STD "Integrated" framework 2026R1 build 2026.1.0.467 was released to production on 2026-01-09. https://sourceforge.net/projects/stdfndclass/files/FrameWork/Integrated => The STD Framework "Example Apps" 2026 R1 latest builds https://chrispollach.blogspot.com/2026/03/updated.html => Updated version of the STD "Order Entry" example App 2025R2 build 2026.1.0.647 was released on 2026-04-08. https://sourceforge.net/projects/stdfndclass/files/Applications/PowerBuilder/OrderEntry
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    Downloads: 66 This Week
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  • 4
    MyBatis

    MyBatis

    MyBatis SQL mapper framework for Java

    MyBatis is a first class persistence framework with support for custom SQL, stored procedures and advanced mappings. MyBatis eliminates almost all of the JDBC code and manual setting of parameters and retrieval of results. MyBatis can use simple XML or Annotations for configuration and map primitives, Map interfaces and Java POJOs (Plain Old Java Objects) to database records. Every MyBatis application centers around an instance of SqlSessionFactory. A SqlSessionFactory instance can be acquired by using the SqlSessionFactoryBuilder. SqlSessionFactoryBuilder can build a SqlSessionFactory instance from an XML configuration file, or from a custom prepared instance of the Configuration class. Building a SqlSessionFactory instance from an XML file is very simple. It is recommended that you use a classpath resource for this configuration, but you could use any InputStream instance, including one created from a literal file path or a file:// URL.
    Downloads: 3 This Week
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    The 4Ever framework provides a OO access layer to a single or a set of XML files. The framework offers a set of basic management services as loading/saving, change history, and consistency checking. It is realized in a component-oriented way.
    Downloads: 4 This Week
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  • 6
    TTMath - a bignum library for C++
    A bignum library written in the C++ programming language as templates. It provides standard mathematical operations like add, sub, mul, div, pow etc. with the big integer and big floating point numbers.
    Downloads: 4 This Week
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  • 7

    XML2CSV Spreadsheet Converter

    Converts XML to CSV using a spreadsheet app

    An MS Excel VBA macro converts XML to CSV. It demonstrates this capability by converting an XML-based Continuity of Care Document (CCD) into a slim Comma Separated Value (CSV) file.
    Downloads: 4 This Week
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  • 8
    The AJAX JSP Tag Library is a set of JSP tags that simplify the use of Asynchronous JavaScript and XML (AJAX) technology in JavaServer Pages. Development moved to Mercurial
    Downloads: 5 This Week
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  • 9
    sof
    SOF (Service Oriented Framework) helps software developers to develop component based software.
    Downloads: 4 This Week
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  • 10

    Eclipse and Java Video Tutorials

    Video tutorials for learning Java OOP programming with Eclipse.

    Free video screencam tutorials for Eclipse and Java. Includes "Eclipse and Java for Total Beginners", "Using the Eclipse Workbench", "Introducing Persistence", and "Using the Debugger". Intended for beginning and intermediate users and programmer. You can view the Total Beginners tutorials on Youtube at https://www.youtube.com/playlist?list=PLv6UtFrA7VEu4PtzJaGHHSeZBi6mdJtwv. You can read descriptions and download all of the tutorials at http://eclipsetutorial.sourceforge.net.
    Downloads: 1 This Week
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  • 11
    Yapsy

    Yapsy

    A fat-free DIY Python plugin management toolkit.

    A simple framework for plugin system development with as few dependencies as possible. It is designed to offer a set of very lean classes (plugin managers and plugin interfaces) which can easily be customised by decoration or inheritance. Yapsy v1.x supports Python2 and Python3. Its source package contains versions of the sources for both pythons. Yapsy v2+ supports Python 3 and it's development happens now on https://github.com/tibonihoo/yapsy/ Usage samples, advices and developer's documentations are available on the main website.
    Downloads: 2 This Week
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  • 12

    PythonQt

    Dynamic Python binding for Qt Applications

    NOTE: PythonQt has been moved to https://github.com/MeVisLab/pythonqt PythonQt is a dynamic and lightweight script binding of the Qt framework to the Python language. It can be easily embedded into Qt applications and makes any QObject derived object scriptable via Python without the need of wrapper code generation.
    Downloads: 1 This Week
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  • 13
    An implementation of the MIDP2 specification on top of Java SE, to make it possible to use the same development tools during most development phases of a MIDlet as for a normal Java SE application.
    Downloads: 4 This Week
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  • 14
    STLSoft C and C++ Libraries
    Robust, Lightweight, Cross-platform, Template Software. STLSoft is a collection of STL and standard library extensions, and facades over operating-system and 3rd-party APIs.
    Downloads: 1 This Week
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  • 15
    Newspeak is a new programming language in the tradition of Self and Smalltalk. Newspeak is highly dynamic and reflective - but designed to support modularity and security. It supports both object-oriented and functional programming.
    Downloads: 3 This Week
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  • 16
    ACDK - Artefaktur Component Development Kit - is a platform independent C++-framework similar to Java or C#/.NET for generating distributed and scriptable components and applications.
    Downloads: 2 This Week
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  • 17
    C# Framework that implements the iRobot Roomba SCI spec. Also included is a diagnostic application named Roomba-Term that uses the framework. I invite you to use the Roomba-Term software as a tool & an example on how to program with the C# SCI
    Downloads: 2 This Week
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  • 18
    Distributed, object-oriented and event-driven LabVIEW based Control System Framework with some SCADA functionality. Documentation about the CS framework is provided via a dedicated web page, http://wiki.gsi.de/cgi-bin/view/CSframework/WebHome . Please note: This project is deprecated an no longer actively maintained. Please follow the link above for more information.
    Downloads: 2 This Week
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  • 19
    ftk is an ActionScript 2.0 library and is focused on data input/output. Most notably are the serialization classes based on php's un/serialize format.
    Downloads: 2 This Week
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  • 20
    AODL,a C# .net library for creating / editing documents in the OpenDocument Format ( ODF ). Requires no knowledge about the ODF XML schema itself. AODC, an OpenDocument Converter & Embed OpenOffice as .net Control
    Downloads: 1 This Week
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  • 21
    Grift is a library that provides a framework for developing a UI-independent application.
    Downloads: 1 This Week
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  • 22
    A simple to use framework to develop a webapplication with PHP. The framework supported the developer of recurrent tasks for example using several languages, central logsystem, manage formulars and more. Documentation and support is available in german.
    Downloads: 1 This Week
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  • 23
    Make AJAX/PHP avatar worlds on websites. Build visualized, real multi-user communities, fora and chat rooms. See your buddies wander around. From card games to virtual RPG worlds, DutchPIPE makes it possible. The future: interconnected DutchPIPE sites.
    Downloads: 1 This Week
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  • 24
    GChart is a PHP library for Google Chart API. The Google Chart API lets you dynamically generate charts. However, it isn't convenient to use. GChart makes it easier to insert Google Chart in PHP pages.
    Downloads: 1 This Week
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  • 25
    Horus Framework

    Horus Framework

    Smart Micro PHP Framework inspired by Sinatra in Ruby but not a clone

    An OOP PHP micro-framework, a lightweight toolkit to help developers lay down the foundation of their PHP-based websites and applications The Horus Framework is a pretty solid attempt at designing a good OOP framework in as a small package as possible. Focused on a light codebase and on a solid, standards-friendly approach, Horus can be used to write advanced applications without having to deal with complex coding toolkits like Zend or CakePHP. Horus is easy to learn and the code is pretty well commented in case developers need help figuring out what's going on.
    Downloads: 1 This Week
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