Open Source Desktop Operating Systems System Software
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System Software for Desktop Operating Systems
Browse free open source System software and projects for Desktop Operating Systems 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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TurboVNC
High-speed, 3D-friendly, TightVNC-compatible remote desktop software
TurboVNC is a high-performance, enterprise-quality version of VNC based on TightVNC, TigerVNC, and X.org. It contains a variant of Tight encoding that is tuned for maximum performance and compression with 3D applications (VirtualGL), video, and other image-intensive workloads. TurboVNC, in combination with VirtualGL, provides a complete solution for remotely displaying 3D applications with interactive performance. TurboVNC's high-speed encoding methods have been adopted by TigerVNC and libvncserver, and TurboVNC is also compatible with any other TightVNC derivative. TurboVNC forked from TightVNC in 2004 and still covers all of the TightVNC 1.3.x features, but TurboVNC contains numerous feature enhancements and bug fixes relative to TightVNC, and it compresses 3D and video workloads much better than TightVNC while using generally only 5-20% of the CPU time of the latter. Using non-default settings, TurboVNC can also be made to compress 2D workloads as "tightly" as TightVNC.">
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HWiNFO
Comprehensive Hardware Analysis, Monitoring and Reporting for Windows
Professional System Information and Diagnostics. Comprehensive Hardware Analysis, Monitoring and Reporting for Windows and DOS. HWiNFO is an all-in-one solution for hardware analysis and monitoring supporting a broad range of OSes (DOS, Microsoft Windows 95 - Windows 11, WinPE) and platforms (i8086 - Xeon Platinum). Exhausting information about hardware components displayed in hierarchy unfolding into deep details. Useful for obtaining a detailed hardware inventory report or checking of various hardware-related parameters. Real-time monitoring of a variety of system and hardware parameters covering CPUs, GPUs, mainboards, drives, peripherals, etc. Useful for detection of overheating, overload, performance loss or failure prediction. Full hardware hierarchy, or quick summary overview. Export into XML, CSV, HTML reports. System monitoring in customizable tables, graphs, tray icons, OSD. -
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S.M.A.R.T. Monitoring Tools
Disk Inspection and Monitoring
smartmontools contains utility programs (smartctl, smartd) to control/monitor storage systems using the Self-Monitoring, Analysis and Reporting Technology System (S.M.A.R.T.) built into most modern ATA and SCSI disks. It is derived from smartsuite. -
The only CRM built for B2CKlaviyo unifies your customer profiles by capturing every event, and then lets you orchestrate your email marketing, SMS marketing, push notifications, WhatsApp, and RCS campaigns in one place. Klaviyo AI helps you build audiences, write copy, and optimize — so you can always send the right message at the right time, automatically. With real-time attribution and insights, you'll be able to make smarter, faster decisions that drive ROI.
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System Informer
View and manage processes, services and more with this powerful tool
System Informer is a free and open source process viewer. This multi-purpose tool will assist you with debugging, malware detection and system monitoring. -
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Auto Keyboard Presser
A simple to use auto keyboard presser to automate keyboard presses.
The Autosofted Auto Keyboard Presser and Recorder is a fully hotkey compatible tool, it is also very simple to use. This is a FREE to download auto keyboard button pressing program which enables you to control which specified keys you want to keep getting pressed repeatedly. You can also control how any times you want the keys to get pressed and how long you want to wait between each key press. -
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Double Commander is a cross platform open source file manager with two panels side by side. It is inspired by Total Commander and features some new ideas.
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log4cplus
Logging Framework for C++
log4cplus is a simple to use C++ logging API providing thread-safe, flexible, and arbitrarily granular control over log management and configuration. It is modelled after the Java log4j API. -
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libusb
A cross-platform library that gives apps easy access to USB devices
Library to enable user space application programs to communicate with USB devices -
Easy-to-Use Website Accessibility WidgetAll in One Accessibility is an AI based accessibility tool that helps organizations to enhance the accessibility and usability of websites quickly.
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ReactOS
An operating system based on the best Windows NT design principles
ReactOS is an open source effort to develop a quality operating system that is compatible with applications and drivers written for the Microsoft Windows NT family of operating systems (NT4, 2000, XP, 2003). -
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XMLStarlet is a set of command line utilities (tools) to transform, query, validate, and edit XML documents and files using simple set of shell commands in similar way it is done for text files with UNIX grep, sed, awk, diff, patch, join, etc utilities.
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VICE
Versatile Commodore Emulator
VICE is an emulator collection which emulates the C64, the C64-DTV, the C128, the VIC20, practically all PET models, the PLUS4 and the CBM-II (aka C610). It runs on Unix, MS-DOS, Win32, OS/2, Acorn RISC OS, BeOS, QNX 6.x, Amiga, GP2X or Mac OS X machines. -
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cdrecord
Highly portable CD/DVD/BluRay command line recording software
cdrecord: A CD/DVD/BD recording program readcd: A program to read CD/DVD/BD media with CD-clone features cdda2wav: The most evolved CD-audio extraction program with paranoia support mkisofs: A program to create hybrid ISO9660/Joliet/HFS filesystems with optional Rock Ridge attributes isodebug: A program to print mkisofs debug information from media isodump: A program to dump ISO-9660 media isoinfo: A program to analyse/verify ISO/9660/Joliet/Rock-Ridge Filesystems isovfy: A program to verify the ISO-9660 structures rscsi: A Remote SCSI enabling daemon -
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Pandora FMS: Flexible Monitoring System
Open Source Monitoring System for performance and availability.
Pandora FMS is an enterprise-ready monitoring solution that provides unparalleled flexibility for IT to address both immediate and unforeseen operational issues, including infrastructure and IT processes. It uniquely enables business and IT to adapt to changing needs through a flexible and rapid approach to IT and business deployment. Pandora FMS consolidates all the needs of modern monitoring (ITOM, APM, BAM) and provides status and performance metrics from different operating systems, cloud, virtual infrastructure (VMware, Hyper-V, XEN), Docker containers, applications, storage and hardware devices such as firewalls, proxies, databases, web servers or routers. It's highly scalable (up to 2000 nodes with one single server), 100% web and with multi-tenant capabilities. It has a very flexible ACL system and several different graphical reports and user-defined control screens. -
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Nikkho
Javier Gutiérrez Chamorro (Guti) Open source projects
Javier Gutiérrez Chamorro (Guti) Open source projects Author's website: https://www.javiergutierrezchamorro.com -
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VTun is the easiest way to create Virtual Tunnels over TCP/IP networks with traffic shaping, compression, and encryption. It supports IP, Ethernet, PPP and other tunnel types. VTun is easily and highly configurable. VPN, Mobile IP, Shaping, etc
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Wine
Run Windows applications on Linux, BSD, Solaris, and Mac OS X
Wine is an Open Source implementation of the Windows API on top of X and Unix. Wine provides both a development toolkit for porting Windows sources to Unix and a program loader, allowing many unmodified Windows binaries to run on x86-based Unixes. -
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Privoxy
HTTP proxy to block ads and customize webpages
Privoxy is a non-caching web proxy with advanced filtering capabilities for enhancing privacy, modifying web page data and HTTP headers, controlling access, and removing ads and other obnoxious Internet junk. Privoxy has a flexible configuration and can be customized to suit individual needs and tastes. It has application for both stand-alone systems and multi-user networks. -
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Snap7
32/64 bit multi-platform Ethernet S7 PLC communication suite
Snap7, through three specialized components: Client and the inedited Server and Partner, allows you to definitively integrate your PC based systems into a PLC automation chain. Designed to transfer large amounts of hi-speed data in industrial facilities, it scales easily, down to small Linux Arm boards such as Raspberry PI. Hi level object oriented wrappers are provided, currently C/C++, .NET/Mono, Pascal, LabVIEW, Python with many source code examples. Very easy to use, a full working server example is not bigger than the “Hello world”. Many projects/makefiles are ready to run to easily rebuild Snap7 in any platform without the need of be a C++ guru. Very detailed documentation provided. -
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Arduino ASCOM Focuser Pro2 DIY
Version 2 of the myFocuser Project
myFocuserPro2 (myFP2) is an ASCOM - INDI - LINUX - WINDOWS telescope focuser with a large range of options. 309,000+ file downloads. The most popular focuser project. (c) Copyright Robert Brown 2014-2025. All Rights Reserved. Code or portions of code may not be copied or used without written permission from the author. Other Focuser Projects myFP2ESP32 WiFi - https://sourceforge.net/projects/myfocuserpro2-esp32/ [ESP32 Only] myFP2ESP8266 WiFi - https://sourceforge.net/projects/myfp2esp8266-focus-controller/ myFP2N - Nextion touch screen display - https://sourceforge.net/projects/arduinoascomfocuserpro2diy/files/myFocuserPro2N%20NEXTION%20TFT%20DISPLAY/ myFP2M - Ready made Controllers https://sourceforge.net/projects/arduinoascomfocuserpro2diy/files/myFocuserPro2M/ Please look in the Files-Documents folder for more information. https://sourceforge.net/projects/arduinoascomfocuserpro2diy/files/Documentation/ -
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UFTP
Encrypted UDP based FTP with multicast
UFTP is an encrypted multicast file transfer program, designed to securely, reliably, and efficiently transfer files to multiple receivers simultaneously. This is useful for distributing large files to a large number of receivers, and is especially useful for data distribution over a satellite link (with two way communication), where the inherent delay makes any TCP based communication highly inefficient. The multicast encryption scheme is based on TLS with extensions to allow multiple receivers to share a common key. UFTP also has the capability to communicate over disjoint networks separated by one or more firewalls (NAT traversal) and without full end-to-end multicast capability (multicast tunneling) through the use of a UFTP proxy server. These proxies also provide scalability by aggregating responses from a group of receivers. -
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Visual Basic 6.0 Runtime Plus
The complete and extended version of Visual Basic 6.0 runtime library
This is the complete package of runtime files and redistributable libraries for running or distributing applications written in Visual Basic 6.0 and together with some third-party redistributable components. Notes and Disclaimer: * Visual Basic 6.0 is a trademark of Microsoft Corporation. * All trademarks and components are owned by their respective owners. * The developer's scope was the collection of VB6 redistributables and creation of installer only. * Use at your own risk, the developers was not responsible for any damages for using this software. -
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I/O performance Analysis Tool
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ANSI C functions and macros for flexible logging to files and other destinations. It is modeled after the Log for Java library (http://www.log4j.org), staying as close to their API as is reasonable. Intended for use in time-space critical environments
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Apcupsd is a program for monitoring UPSes and performing a graceful computer shutdown in the event of a power failure. It runs on Linux, Mac OS/X, Win32, BSD, Solaris, and other OSes.