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.

  • Simple, Secure Domain Registration Icon
    Simple, Secure Domain Registration

    Get your domain at wholesale price. Cloudflare offers simple, secure registration with no markups, plus free DNS, CDN, and SSL integration.

    Register or renew your domain and pay only what we pay. No markups, hidden fees, or surprise add-ons. Choose from over 400 TLDs (.com, .ai, .dev). Every domain is integrated with Cloudflare's industry-leading DNS, CDN, and free SSL to make your site faster and more secure. Simple, secure, at-cost domain registration.
    Sign up for free
  • Gen AI apps are built with MongoDB Atlas Icon
    Gen AI apps are built with MongoDB Atlas

    Build gen AI apps with an all-in-one modern database: MongoDB Atlas

    MongoDB Atlas provides built-in vector search and a flexible document model so developers can build, scale, and run gen AI apps without stitching together multiple databases. From LLM integration to semantic search, Atlas simplifies your AI architecture—and it’s free to get started.
    Start Free
  • 1
    Gambas
    A Graphical Developement Environment based on a Basic Interpreter with object extensions.
    Downloads: 20 This Week
    Last Update:
    See Project
  • 2

    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.
    Leader badge
    Downloads: 21 This Week
    Last Update:
    See Project
  • 3
    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: 17 This Week
    Last Update:
    See Project
  • 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
    Leader badge
    Downloads: 15 This Week
    Last Update:
    See Project
  • The All-in-One Commerce Platform for Businesses - Shopify Icon
    The All-in-One Commerce Platform for Businesses - Shopify

    Shopify offers plans for anyone that wants to sell products online and build an ecommerce store, small to mid-sized businesses as well as enterprise

    Shopify is a leading all-in-one commerce platform that enables businesses to start, build, and grow their online and physical stores. It offers tools to create customized websites, manage inventory, process payments, and sell across multiple channels including online, in-person, wholesale, and global markets. The platform includes integrated marketing tools, analytics, and customer engagement features to help merchants reach and retain customers. Shopify supports thousands of third-party apps and offers developer-friendly APIs for custom solutions. With world-class checkout technology, Shopify powers over 150 million high-intent shoppers worldwide. Its reliable, scalable infrastructure ensures fast performance and seamless operations at any business size.
    Learn More
  • 5
    JPOX was an Apache2 licensed standards-driven Java persistence implementation. It is replaced by DataNucleus http://www.datanucleus.org
    Downloads: 8 This Week
    Last Update:
    See Project
  • 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:
    See Project
  • 7
    273 Loaded is an Enterprise-class eCcommerce Distribution derived from sources freely provided to the public by a prominent North American Enterprise eCommerce vendor.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 8
    API Allociné Helper is support for using the API of Allociné, of Screenrush, of Sensacine and of Filmstarts: find lots of information about movies, people, etc.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 9
    Articulated Robot Human interface (Articulated Robot humaN InterfacE) System designed in order to control remote devices (aka: Articulated robotic devices), using mainly joystick-type devices as input method
    Downloads: 0 This Week
    Last Update:
    See Project
  • Enterprise and Small Business CRM Solution | Clear C2 C2CRM Icon
    Enterprise and Small Business CRM Solution | Clear C2 C2CRM

    Voted Best CRM System with Top Ranked Customer Support. CRM Management includes Sales, Marketing, Relationship Management, and Help Desk.

    C2CRM consists of four modules that integrate to provide a comprehensive CRM solution: Relationship Management, Sales Automation, Marketing Automation, and Customer Service. Only buy what each user needs.
    Learn More
  • 10
    AWL, "Another Wizard Library", is a java swing-based library that provides extended functionnalities to easily create rich wizards.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 11
    BTTF allows to elevate the level of abstractions at the moment of working with time in an application. Being able to model domains thinking in terms of minute, day, month year, ranks and periods of time, etc. Avoiding dirty handlings of primitive types.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 12

    CommanderPhp

    Commander Easy PHP Framework

    A simple framework for application development in PHP, Object Oriented with MVC architecture and modular development. Focused on simplicity and rapid application development.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 13

    Concept Framework

    Dynamic Knowledge Repository

    Downloads: 0 This Week
    Last Update:
    See Project
  • 14
    Cooperator is on the one hand, a base class library for Object Relational Mapping, ORM, and by another one, a tool of code generation for for the MS.Net 2.0/3.0, using Business Objects and Stored Procedures. DAL, ORM, UOW, FACADE, MAPPER, MODELING ...
    Downloads: 0 This Week
    Last Update:
    See Project
  • 15
    A .Net 2.0 library that encapsulates from ADO.Net the functionality for connecting to the most common data servers like MySql, PostgreSql, MsSql (testing), ms Access(testing) and Oracle(soon).
    Downloads: 0 This Week
    Last Update:
    See Project
  • 16
    DEG Frameworks

    DEG Frameworks

    Motor de aplicaciones php, MVC y POO

    Es dificil describir a DEG ya que no es un framework, es un SISTEMA DE APLICACIONES y por tanto no es una aplicación determinada como un cms o un foro, DEG es el sistema con el que se puede realizar todo tipo de aplicaciones web sin importar el alcance que se le quiera dar. A diferencia de otros sistemas donde hay un “motor” definido, DEG no tiene una clase o archivo que sirva de “motor” porque está pensado para que el conjunto funcione como un TODO. DEG está creado con base en el modelo de abstracción de desarrollo de software MVC, el motor de plantillas integrado con el que se facilita el manejo de los idiomas es un solo elemento que gestiona la conexión entre el soft y la vista, para mas info pasen por nuestra web http://proyectodemonia.com.ar
    Downloads: 0 This Week
    Last Update:
    See Project
  • 17
    Planeación de Recursos Empresariales para la Administración de la Educación
    Downloads: 0 This Week
    Last Update:
    See Project
  • 18
    A cross-platform GUI, new language (eC), and 3D engine.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 19
    GAEM stands for Graphical Adventure tiny-Engine for Mobiles. Its main use is to read some text files and images and generate the game. It's being developed in J2ME under CLDC/MIDP environment.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 20
    Gaphor is a UML modeling environment written in Python. Gaphor is small and very extensible. The repository is located at http://github.com/gaphor/gaphor.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 21
    Genesis is an IOC framework written in Java. It allows you to instantiate different kinds of objects with diverse tools which are provided by the abovementioned framework: XML, extensible design, reflective API, containers for the different types of IOC.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 22
    Bean oriented to creation & manipulation forms in web apps.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 23
    Este es un código que genera una imagen con una cadena de caracteres dentro para usar de validador por imagen. Es muy util para formularios WEB. Es muy facil de usar y tiene una documentación completa con ejemplos. Ademas trae muestras
    Downloads: 0 This Week
    Last Update:
    See Project
  • 24
    The project models a Matrix in JAVA with a complete Object Oriented approach, from its values to its access and indices. There are specialized classes for tables(2), cubes(3), and arbitrary(N) dimensions matrices
    Downloads: 0 This Week
    Last Update:
    See Project
  • 25
    JaDiMa (Java Distributed Machine} is a collaborative platform to construct high performance distributed java applications on grid platforms. It is a system that automatically and transparently manages the remote libraries used in a java application.
    Downloads: 0 This Week
    Last Update:
    See Project
  • Previous
  • You're on page 1
  • 2
  • Next