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

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  • 1
    WinMerge

    WinMerge

    Windows visual diff and merge for files and directories

    WinMerge is a Windows tool for visual difference display and merging, for both files and directories. It is highly useful for determining what has changed between file versions, and then merging those changes. WinMerge has Unicode support, Flexible syntax coloring editor, Visual SourceSafe integration, and Windows Shell integration. Regexp filtering for filenames and lines. Side-by-side line difference and highlights differences inside lines. A file map shows the overall file differences in a location pane. The user interface is translated into several languages.
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    Downloads: 39,347 This Week
    Last Update:
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  • 2
    NSIS: Nullsoft Scriptable Install System

    NSIS: Nullsoft Scriptable Install System

    Windows installer development tool

    NSIS (Nullsoft Scriptable Install System) is a professional open source system to create Windows installers. It is designed to be as small and flexible as possible and is therefore very suitable for internet distribution. Being a user's first experience with your product, a stable and reliable installer is an important component of succesful software. With NSIS you can create such installers that are capable of doing everything that is needed to setup your software. NSIS is script-based and allows you to create the logic to handle even the most complex installation tasks. Many plug-ins and scripts are already available: you can create web installers, communicate with Windows and other software components, install or update shared components and more.
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    Downloads: 10,010 This Week
    Last Update:
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  • 3
    ClipAngel

    ClipAngel

    Clipboard history capture and paste tool

    This program belongs to class "Clipboard Manager". It captures many clipboard objects and allows user to select and paste one in any program. Inspired by analogs: ClipDiary, Ditto, AceText. Main priorities: usability, compatibility, reliability. Requires .Net Framework 4.52+ (Windows Vista+/Server 2008+)
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    Downloads: 130 This Week
    Last Update:
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  • 4
    Gammu

    Gammu

    Cellular manager for mobile phones/modems

    Gammu is a cellular manager for mobile phones/modems. It contains libraries and functions for ringtones,logos,phonebook,SMS,etc. (used by external software), a command line version (with backup/restore) and SMS gateway (with MySQL and PostgreSQL supp
    Downloads: 36 This Week
    Last Update:
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  • 5
    PHP File Manager

    PHP File Manager

    phpFileManager a complete filesystem management tool on a single file.

    phpFileManager is a complete filesystem management tool on a single file. A server administration tool using PHP, meant for rapid file access, and also to verify the server configuration and security. The script can be renamed and deployed on an unique known url, and offers password protection.. All dependencies, like images, js and css files, are included inside the same file, so that the script can run even on offline devices, like a local Raspberry Pi, or ESP32 microcontroller. The size of the script is bellow 1Mb, and i want to make it even smaller. To conclude, this script is also a repository of several hand made functions, organized in sections, meant for learning PHP and explore all PHP capabilities. You can learn, copy and use them on your own projects. Help the project with a donation: Will allow the view of two phpFileManager from diferent URLs on the same screen. Like MC (Midnight Commander) does. https://www.dulldusk.com/product/donation-for-phpfilemanager/
    Downloads: 37 This Week
    Last Update:
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  • 6
    Orbada - Database manager

    Orbada - Database manager

    Database SQL, query tool, using JDBC for Oracle,SQLite,PostgreSQL,etc

    ORBADA is a database, SQL, query client using JDBC drivers. It is a tool to administrate and manage database structure. It Is for Oracle, SQLite, Firebird, HSQLDB, DerbyDB, MySQL, PostgreSQL and other databases.
    Downloads: 9 This Week
    Last Update:
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  • 7
    Tiny8051
    Tiny8051 is small 8051 microcontroller simulator written in C#. Project was created for educational purposes, to show how µP works by using clean visual interface and debugging. Note: communication over serial port was not implemented, because there was no demand for it.
    Downloads: 4 This Week
    Last Update:
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  • 8
    Software Graphical 8051 Emulator, based on Allegro.
    Downloads: 5 This Week
    Last Update:
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  • 9
    Daphne

    Daphne

    GPL task manager replacement for Windows

    Daphne is a system tray application for process killing, controlling and debugging. It's development started back in 2005. It was first thought to kill a set of windows process at once. With the time it became a GPL task manager replacement for Windows. You can kill a process by dragging the mouse over the windows, by right-clicking the process in the main process list, or by typing its name with the "Kill all by name" command. You can set a any window to be always on top, to be transparent, to be enable, et cetera. Although Daphne was born just to kill windows process. You can think of Daphne as a task manager replacement. The main window displays a list of currently running process with detailed information about: CPU usage, Process ID, Process name, Full path (and arguments), Priority, Class (Process / Service), Current memory usage, Peek memory usage, Current swap usage, Peek swap usage and Number of threads.
    Downloads: 2 This Week
    Last Update:
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  • 10
    Gobisoft

    Gobisoft

    Software auto-installation builder

    Gobisoft is a batch package builder for applications, it builds a self-install package of your programs. Creates a stand alone executable file that performs the (secured installation and removing) of the elements necessary to distribute your applications. The software offers many possibilities, such as executing commands before and after installation.
    Downloads: 1 This Week
    Last Update:
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  • 11
    CyBerFuN xBTiT
    CyBerFuN xBTiT by cybernet2u / I only install hacks and maintain them / all the credits for the core source goes to : http://www.btiteam.org new files here ->https://github.com/cybyd/cybyd
    Downloads: 1 This Week
    Last Update:
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  • 12
    This project is about the graphical simulation of pipelining mechanism in Central Processor Unit. It includes (1) INES Components package created in Delphi, which allows fast building of simple simulators; (2) INES - simulator created with this package.
    Downloads: 0 This Week
    Last Update:
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  • 13
    This project is a try of implementing Java Messages Systems on Java 2 Micro Edition. The project consists of a few parts: - a library for mobiles, implementing most of JMS methods - a proxy serwer, running on J2SE, communicating with queues provider
    Downloads: 0 This Week
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  • 14
    ButterflyOS is a very simple operation system for the Atmel AVR Butterfly board. It's based on the AvrX multitasking scheduler, created by Larry Barello. A byte-code program for ButterflyOS, can be sent and managed through the serial interface.
    Downloads: 0 This Week
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  • 15
    PGRFileManager is a free (MIT license) ajax-based file manager you can use standalone or with FCKEditor & CKEditor
    Downloads: 0 This Week
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  • 16
    WiiTCPLoad let you easily make a connection with Homebrew/TCPLoader Channel and stream binary files. It's written in c++ using Qt4 library.
    Downloads: 0 This Week
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  • 17
    yagdt (Yet Another Graph Drawing Tool) is a plugin-based graph drawing application & distributed graph storage engine.
    Downloads: 0 This Week
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  • 18
    jHelpDesk is a simple, flexible and extremely easy to use software for supporting company's helpdesk team.
    Downloads: 0 This Week
    Last Update:
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  • 19
    [ENG] mkLib - object oriented C++ Windows library featuring: networking (Windows Sockets), threading, GUI. [PL] mkLib - obiektowa biblioteka w C++ dla Windows, obslugujaca: programowanie sieciowe (Windows Sockets), wielowatkowosc, GUI.
    Downloads: 0 This Week
    Last Update:
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