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
    Gambas
    A Graphical Developement Environment based on a Basic Interpreter with object extensions.
    Downloads: 22 This Week
    Last Update:
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  • 2
    ADempiere ERP Business Suite

    ADempiere ERP Business Suite

    A full ERP system - moved to GitHub. See full description for details.

    NOTE: We're moving! See adempiere.net for more info. ADempiere Business Suite is a fully functional ERP/CRM/MFG/SCM/POS system suitable for large enterprise adoption. The software is fully open source and supported by an international community of developers and system experts.
    Downloads: 21 This Week
    Last Update:
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  • 3
    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.
    Downloads: 12 This Week
    Last Update:
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  • 4
    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 2025R1 build 2025.1.0.436 was released to production on 2025-06-09. https://sourceforge.net/projects/stdfndclass/files/FrameWork/Integrated => The STD "Web Service" framework 2022R2 build 2021.2.0.106 is the last release to production on 2021-05-12. This PB feature is now discontinued as of PB 2021 https://sourceforge.net/projects/stdfndclass/files/FrameWork/WebService => Updated version of the STD "Order Entry" example App 2025R1 build 2025.1.0.626 was released on 2025-05-29. https://sourceforge.net/projects/stdfndclass/files/Applications
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    Downloads: 21 This Week
    Last Update:
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  • 5
    "Fiber" is a java library which adds functionalities to the Sun java standard library : new Swing widgets ( preferences dialog, event log , ... ) , new supported protocols ( rss ) , frameworks ( user tracking on web applications ) and other utilities
    Downloads: 1 This Week
    Last Update:
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  • 6
    Seagull is an OO PHP application framework that has the following design goals: a) independence of data, logic & presentation layers; b) extensible component architecture; c) comprehensive error handling; d) integration with PEAR; e) coding standards
    Downloads: 1 This Week
    Last Update:
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  • 7
    Aquamarine is a Object Oriented language. The goal of this project is to provide a aquamarine to C++ compiler and a classes library.
    Downloads: 0 This Week
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  • 8
    AWL, "Another Wizard Library", is a java swing-based library that provides extended functionnalities to easily create rich wizards.
    Downloads: 0 This Week
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  • 9
    Beagle is a Java lightweight framework to fetch database entries in an optimized data structure.It can be useful in those application that need to a fast data access.It is designed around Agile Methodologies with pattern of Test Driven Development.
    Downloads: 0 This Week
    Last Update:
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    Connect every part of your business to one bank account

    North One is a business banking app that integrates cash flow, payments, and budgeting to turn your North One Account into one Connected Bank Account

    North One is proudly built for small businesses, startups and freelancers across America. Make payments easily, keep tabs on your money and put your finances on autopilot through smart integrations with the tools you’re already using. North One was built to make managing money easy so you can focus on running your business. No more branches. No more lines. No more paperwork. Get complete access to your North One Account from your phone or computer, wherever your business takes you. Create Envelopes for taxes, payroll, rent, and anything else automatically.
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  • 10
    D4Modelizer is a simple but powerful code generator. It produces C# code from your Database. Each table could be mapped to an object and its fields in properties. D4Modelizer propose a mapping schema between the database structure and the object model.
    Downloads: 0 This Week
    Last Update:
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  • 11
    Eserciziari di C++ e Java sul progetto object-oriented e la realizzazione di strutture dati. C++ and Java Exercise books (in Italian language) about object oriented data structures design and implementation.
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    Downloads: 0 This Week
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  • 12
    FireFenix is a Object Oriented Database,the objective of this application is to make more ease to catalog and archive,this project use the FX 3.0,the objective of this software is to be used for archive museum object,libraries,and other kind of warehous
    Downloads: 0 This Week
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  • 13
    General Toolkit Library is a general purpose toolkit written in C++ designed to make it easier for developers to produce applications. It provides classes and templates that implement several data structures like Arrays, Lists, Heaps, Sets, Files, etc.
    Downloads: 0 This Week
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  • 14
    This is a simplified version of the GNU Grep. Search a RegExp on a file that contain all alphanumeric characters. Use special symbols like @ and # to extend the search. Now you can set Case Sensitive option and ignore withespaces during the search.
    Downloads: 0 This Week
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  • 15
    MinotaurRTM

    MinotaurRTM

    Vb.net source generator (SQL syntax fully integrated in development).

    With Minotaur (RTM) you can Generate complete vb.net Source. SQL statement are available into source code generation program.
    Downloads: 0 This Week
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  • 16
    A MUD "totally" written in Perl. It runs an engine which relies on a extensible Perl MudLib and interprets user-programmable scripts in a fashion that reminds the old-time LPC MUD, but now everything is in Perl. It uses Perl v.5.10.0 and SQLite 3.3.7.
    Downloads: 0 This Week
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  • 17
    SensoTools è un insieme di tools pensati per facilitare la vita a chi gioca a travian. Nella sua prima versione sarà un semplice calcolatore di tempi, e segnalerà quali edifici si possono costruire e l'ora esatta in cui le risorse saranno disponibili
    Downloads: 0 This Week
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  • 18
    Service Peer is a p2p application, for the framework UniboEnv-p2p.
    Downloads: 0 This Week
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  • 19
    _Stamps_ is a framework for java application development which extends the MVC (Model - View - Controller) pattern providing a complete decoupling between view and model with the usage of annotations (JSE5) and dispatching mechanisms.
    Downloads: 0 This Week
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  • 20
    Genetic Algorithm based software to resolve the Traveling Salesman Problem (Problema del Commesso Viaggiatore).
    Downloads: 0 This Week
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  • 21
    Downloads: 0 This Week
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  • 22
    Php5Utils is a collection of small components written for general use in php5. Parts of code comes from projects developed by Active Mind for giarre.com administrative tools
    Downloads: 0 This Week
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