Open Source User Interface (UI) Software

Browse free open source User Interface (UI) software and projects for Windows and Mac below. Use the toggles on the left to filter open source User Interface (UI) software by OS, license, language, programming language, and project status.

  • Gen AI apps are built with MongoDB Atlas Icon
    Gen AI apps are built with MongoDB Atlas

    The database for AI-powered applications.

    MongoDB Atlas is the developer-friendly database used to build, scale, and run gen AI and LLM-powered apps—without needing a separate vector database. Atlas offers built-in vector search, global availability across 115+ regions, and flexible document modeling. Start building AI apps faster, all in one place.
    Start Free
  • Our Free Plans just got better! | Auth0 Icon
    Our Free Plans just got better! | Auth0

    With up to 25k MAUs and unlimited Okta connections, our Free Plan lets you focus on what you do best—building great apps.

    You asked, we delivered! Auth0 is excited to expand our Free and Paid plans to include more options so you can focus on building, deploying, and scaling applications without having to worry about your security. Auth0 now, thank yourself later.
    Try free now
  • 1
    [incr Tcl] is the most widely used O-O system for Tcl. The name is a play on C++, and [incr Tcl] provides a similar object model, including multiple inheritence and public and private classes and variables. Repos now http://core.tcl.tk/itcl and itk
    Leader badge
    Downloads: 166 This Week
    Last Update:
    See Project
  • 2
    JDatePicker. JavaBean components(calendar panel, combobox, dialog). Support appearance customization with visual editors, external skins support. Single, period, miltiple or null selection. Also support visual property customization without IDE
    Leader badge
    Downloads: 59 This Week
    Last Update:
    See Project
  • 3
    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: 8 This Week
    Last Update:
    See Project
  • 4
    This project has moved! Go to https://github.com/yenrab/qchybrid
    Downloads: 2 This Week
    Last Update:
    See Project
  • FusionAuth: Authentication and User Management Software Icon
    FusionAuth: Authentication and User Management Software

    Offer your users flexible authentication options, including passwords, passwordless, single sign-on (SSO), and multi-factor authentication (MFA).

    FusionAuth adds login, registration, SSO, MFA, and a bazillion other features to your app in days - not months.
    Learn More
  • 5
    SCL Manipulation and Configuration Tools, is a set of libraries and applications that allows to create and modify XML files witch use Substation Configutation Language based on IEC61850 part 6 standart.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 6
    Agar

    Agar

    Cross Platform GUI Toolkit

    Agar provides a base GUI framework and a standard set of widgets from which graphical applications can be built which run natively under X11, Windows, MacOS, SDL and others. It takes advantage of texture and GPU acceleration wherever available. Agar can also attach to an existing framebuffer, SDL or OpenGL context and operate as a self-contained window-manager. It includes a standard library of general-purpose widgets, and is also designed to be extended externally. New widgets can be implemented as part of an application or library. Complex user interface elements can be realized often in few lines of code. Agar is also extensible at the low-level. The low-level API is documented such that modular drivers can be written which enable Agar applications to work seamlessly under many platforms graphics systems without any change at the application level.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 7
    This is a calendar control with multi-select. It provides a point and click interface for selecting holidays or special days. It previously extended on MonthCalendar, now it has a fixed size in all regions and all drawing is handled internally.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 8
    A time schedule graphical component with a point and click interface. This is a custom drawn control written in C#. It provides an easy interface for laying out periods of time associated with a predefined color/state. The control respects local timeform
    Downloads: 0 This Week
    Last Update:
    See Project
  • 9
    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: 0 This Week
    Last Update:
    See Project
  • AestheticsPro Medical Spa Software Icon
    AestheticsPro Medical Spa Software

    Our new software release will dramatically improve your medspa business performance while enhancing the customer experience

    AestheticsPro is the most complete Aesthetics Software on the market today. HIPAA Cloud Compliant with electronic charting, integrated POS, targeted marketing and results driven reporting; AestheticsPro delivers the tools you need to manage your medical spa business. It is our mission To Provide an All-in-One Cutting Edge Software to the Aesthetics Industry.
    Learn More
  • 10
    Adventure PHP Framework (APF)
    The adventure php framework understands itself as a utility to implement object oriented and generic PHP web applications. It supports the developer to create programms in compliance with approved software design patterns.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 11
    A web form control for ASP.NET developers. The control features two way data binding, automatic data type validation and includes client side logic and validation.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 12
    BeanShield is a powerful Java library, that makes it easy to directly use your complex entity model in your UI (Web based and Client) without the need to copy or clone data to be able to rollback changes when a user clicks "Cancel".
    Downloads: 0 This Week
    Last Update:
    See Project
  • 13
    Ever wondered, how to create a huge Java/swing application, without ignoring the MVC-Pattern? BlackVisi is the ultimative way to keep you code simple, stable and maintainable! It is state-oriented, uses state-of-the art techniques (Java5) and is flexible
    Downloads: 0 This Week
    Last Update:
    See Project
  • 14
    A free rendered GUI library providing windowing and widgets for the easy creation of HUDs for games. It supports themes/skinning, XML-based configuration, and works with any graphics API or rendering engine including Axiom, Irrlicht, and SDL.NET.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 15
    A PHP class library for writing powerfull reloadless web user interfaces using Ajax (DHTML+server-side) style
    Downloads: 0 This Week
    Last Update:
    See Project
  • 16
    The API features a layer between the trivial PHP and the low level web GUI (XHTML, XML, Javascript, PDF, Ajax ...). It’s extensible because of its clean and easy structure. The Concept comes with a widget toolkit, many plug-ins, themes and sub-modules.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 17
    A C++ based framework for highly object-oriented cross-platform programming. Includes Thread, Processes,Filesystem access,GUI, etc. plus a set of generic utilities like Strings,Data structures,advanced debugging tools, etc.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 18
    DC Ent is a development platform made for fast, easy ,clean web development and maintenance written in PHP.All pages are generated from mysql database .You can include files,add php scripts,edit records in db and very easy manage page components .
    Downloads: 0 This Week
    Last Update:
    See Project
  • 19
    .NET Assemblies that integrate and expands on various advanced solutions for DataBinding, Reflection, UI Wrapping and more. Fuel your .NET applications with RAD techniques and ready-to-use code that picks up where the .NET framework left off.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 20
    PHP class to generate multi-level select lists, populated using ajax from a Mysql table, where the next level list depends on the selected value of its parent.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 21
    A cross-platform GUI, new language (eC), and 3D engine.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 22
    Fast UML is an open-source UML tool with a simple user interface pop-up free. Draw UML diagrams fast, export diagrams to png, jpg and clipboard. It pretends to be the union between Violet and UMLet.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 23
    "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: 0 This Week
    Last Update:
    See Project
  • 24
    FireWeb

    FireWeb

    Java Single Page Web Application Framework

    Java Single Page Application Framework. Using POJO/JavaScript/WebSocket/HTML. Without any scripting - only pure Java classes. Simply and easy to learn, use and extend.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 25
    Institute of Technology, Blanchardstown Computer Science code by the class of 2007-2011 on course BN104. In this project we are open sourcing all of our project work to the public in the hopes it can be reused, built-upon, and used in education.
    Downloads: 0 This Week
    Last Update:
    See Project
  • Previous
  • You're on page 1
  • 2
  • 3
  • 4
  • Next