Open Source C# System Software - Page 2
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C# System Software
View 1980 business solutionsBrowse free open source C# System Software and projects below. Use the toggles on the left to filter open source C# System Software by OS, license, language, programming language, and project status.
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Kickass Undelete
A free, open source file recovery tool for Windows.
Kickass Undelete is a free, fully featured, file recovery tool for Windows. Accidentally deleted a file? Never fear; the data is probably still on your drive and may be recoverable. Kickass Undelete finds all of the deleted files on your hard drive, flash drive or SD card and allows you to recover them. -
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RED searches and deletes empty directories recursively below a given start folder and shows the result in a well arranged tree. Further you can create some custom rules for keeping and deleting folders. Empty files in directories can also be ignored.
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QTTabBar is extension for Windows Explorer that brings tabbed browsing to Microsoft's file browser, along with a host of other great features. Under new management! Now in public beta!
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AlphaClicker
Windows Autoclicker with a modern UI
Alpha Clicker is an auto clicker for Windows with a modern user interface. It is open-source, unlike many other auto clickers. Ever got tired of the old design of your auto clicker? This is for you. Just search "Auto clicker" and you will get a bunch of ancient auto clickers (which work but look ancient). It basically works just like any other auto clicker. -
Build Securely on Azure with Proven FrameworksMoving to the cloud brings new challenges. How can you manage a larger attack surface while ensuring great network performance? Turn to Fortinet’s Tested Reference Architectures, blueprints for designing and securing cloud environments built by cybersecurity experts. Learn more and explore use cases in this white paper.
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Windows Service Wrapper permissive
A wrapper executable that can run any executable as a Windows service
WinSW wraps and manages any application as a Windows service. Functionality-wise, there's really not much that's worth noting; the problem of wrapping a process as a Windows service is so well defined that there aren't really any room for substantial innovation. You basically write a configuration file specifying how you'd like your process to be launched, and we provide programmatic means to install/uninstall/start/stop services. Another notable difference is that winsw can host any executable, whereas Java Service Wrapper can only host Java apps. Whether you like this or not depends on your taste, so I wouldn't claim mine is better. It's just different. WinSW 3 can run on Windows platforms with .NET Framework 4.6.1 or later versions installed. For systems without .NET Framework, the project provides native 64-bit and 32-bit executables based on .NET Core. -
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Harmony
Patching, replacing and decorating .NET and Mono methods
Harmony gives you an elegant and high-level way to alter the functionality in applications written in C#. It works great in games and is well established in titles like 7 Days To Die, BattleTech, Besiege, Cities:Skylines, Kerbal Space Program, Oxygen Not Included, Ravenfield, Rimworld, Sheltered, Stardew Valley, Staxel, Subnautica, The Ultimate Nerd Game, Total Miner, Unturned, SCP: Secret Laboratory and many more. If you develop in C# and your code is loaded as a module/plugin into a host application, you can use Harmony to alter the functionality of all the available assemblies of that application. Where other patch libraries simply allow you to replace the original method, Harmony goes one step further. It is also used in unit testing WPF controls and in many other areas. Installation is done by using 0Harmony.dll in your project or by using the Lib.Harmony nuget package. -
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IsoCreator (could also be called Folder-to-ISO or Directory-to-ISO) C#.NET 2.0 application which creates ISO 9660 Joliet CD images from a given folder or volume. Can also create ISO with virtual files, given a tree representing a directory structure.
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Steam Deck Tools
Fan, Overlay, Power Control and Steam Controller for Windows
Steam Deck Tools is a community-driven collection of utilities designed to enhance the experience of running Windows on the Valve Steam Deck. Hosted on GitHub and written primarily in C#, this suite bundles multiple practical tools into a single package, including fan control, performance overlay, power (TDP and refresh rate) adjustment, and Steam Controller support. The tools aim to fill functionality gaps when running Windows on a device originally optimized for SteamOS, such as adjusting thermal behavior or viewing real-time stats like FPS. Users have noted the project provides a lightweight alternative to other companion utilities and can be especially helpful when default drivers or settings don’t cover desired features. Because this software interacts with low-level system controls, its use carries some risk of instability, and it’s provided on a best-effort basis with documentation on installation and troubleshooting. -
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MouseController
Records and plays back mouse actions
MouseController lets you record and save mouse movement and clicks with a push of a key. Shortcut keys for record and playback are configurable (function keys only). Playback can be delayed and repeated infinitely at a configurable interval. A time stretch function lets you slow down or speed up the playback. Execution via command line provides the option to set most parameters visible in the UI. This application requires the .NET Framework 4.8 runtime. The installer will attempt to install the framework if necessary. -
MongoDB Atlas runs apps anywhereMongoDB Atlas gives you the freedom to build and run modern applications anywhere—across AWS, Azure, and Google Cloud. With global availability in over 115 regions, Atlas lets you deploy close to your users, meet compliance needs, and scale with confidence across any geography.
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RoboMirror's aim is to provide a very simple and user-centered GUI for Robocopy to allow for easy synchronization of two directory trees, e.g., to perform a robust incremental backup, both locally (e.g., to an external hard disk) and across the network. Additionally, RoboMirror supports volume shadow copies. By using shadow copies, all files can be copied, including files locked by running processes (Outlook, SQL Server...).
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smtp4dev
The fake smtp email server for development and testing
smtp4dev - the fake SMTP email server for development and testing. A dummy SMTP server for Windows, Linux, Mac OS-X (and maybe elsewhere where .NET Core is available). Lets you test your application without spamming your real customers. -
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HDGraph
Display disk usage in a smart view, to identify where space is lost.
The first free tool for Windows able to draw multi-level pie charts of disk space ! HDGraph displays graphically the hard disk space usage. It shows all your directories and subdirectories on a single graph, allowing to see the largest ones at a glance. -
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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. 315,606+ file downloads. The most popular focuser project. (c) Copyright Robert Brown 2014-2026. 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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Npgsql
Npgsql is the .NET data provider for PostgreSQL
Npgsql is an open source ADO.NET Data Provider for PostgreSQL, it allows programs written in C#, Visual Basic, F# to access the PostgreSQL database server. It is implemented in 100% C# code, is free and is open source. An Entity Framework Core provider is also available and exposes some features unique to the PostgreSQL database to EF Core users. Finally, a legacy Entity Framework 6.x (non-Core) provider is also available but is no longer being actively maintained. Npgsql is the open source .NET data provider for PostgreSQL. It allows you to connect and interact with PostgreSQL server using .NET. -
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NetStalker
A network tool to control the bandwidth over your local network
A network tool to control the bandwidth over your local network, it can block internet access from any selected device, or limit its speed using packet redirection, in addition, it can log web activity for the targeted device using a built-in packet sniffer. Bandwidth limitation for better distribution of internet speed across devices, both upload and download speeds can be controlled for each device separately. A Packet Sniffer that is intended to log addresses that each device on the network visits with the ability to decode Http headers for HTTP packets and resolve domains for HTTPS packets, also the packet direction can be chosen in order to capture requests only or requests and responses. -
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GTweak
Portable Tool for an Ideal Windows Setup
GTweak is a Windows optimization and customization utility designed to give users deep control over system behavior, privacy, and performance. It provides a wide range of tools to disable unnecessary services, reduce telemetry, and streamline the operating system for better efficiency. The software allows users to modify system settings that are typically hidden or difficult to access, making advanced tweaks more accessible. GTweak also includes features for removing pre-installed apps, managing updates, and customizing the Windows interface. It is particularly focused on privacy, enabling users to disable tracking, data collection, and background services from Microsoft and third parties. Overall, GTweak serves as an all-in-one toolkit for debloating, securing, and optimizing Windows environments. -
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Universal x86 Tuning Utility
Unlock the full potential of your Intel/AMD based device
Unlock the full potential of your Intel/AMD-based device. -
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N_m3u8DL-CLI
Simple CLI tool to download m3u8 streams to MP4/TS with rich options
N_m3u8DL-CLI is a cross-platform command-line downloader for m3u8 (HLS) playlists. It converts streams to MP4 or TS and offers rich command-line options. While the original CLI uses .NET Framework (Windows), its successor N_m3u8DL-RE adds true cross-platform support for Windows, Linux, and macOS. Common in media workflows for downloading and converting streaming video. -
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QuickLook
Bring macOS “Quick Look” feature to Windows
Bring macOS “Quick Look” feature to Windows. One of the few features I missed from macOS is Quick Look. It allows users to peek into a file's content at lightning speed by just pressing the Space key. Windows, on the other hand, does not have this handy feature, until now! I am aware that several alternatives are already available on the Internet (e.g. WinQuickLook and Seer). Despite these options, I still decided to craft another one by myself, because they are either not being actively developed, lack variety, or ask for some. Tons of supported file types. Fluent design. Touchscreen friendly. HiDPI support. Preview from the open and save file dialog. Preview from 3rd-party file managers. Easily extended by plugins. Strict GPL license to keep it free forever. Preview next file by clicking on it or using arrow-keys (arrow-keys move selection in the background if the preview window is not in focus). -
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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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File Converter
Simple tool which allows you to convert and compress files
File Converter is a minimalist open‑source tool (GPL‑3.0) that lets users convert and compress one or multiple files directly via the Windows Explorer context menu. It integrates with powerful back-end utilities—FFmpeg, ImageMagick, Ghostscript—to handle a broad range of media and document transformations. File Converter is a personal open source project started in 2014. I have put hundreds of hours adding, refining and tuning File Converter with the goal of making the conversion and compression of files an easy task for everyone. File Converter is a very simple tool which allows you to convert and compress one or several file(s) using the context menu of windows explorer. -
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OpenHardwareMonitor
Free open source tool for real-time PC hardware sensor monitoring
Open Hardware Monitor is a free and open source hardware monitoring application designed primarily for personal computers. It provides real-time insights into key system metrics such as temperatures, fan speeds, voltages, load percentages, and clock speeds by reading directly from sensors embedded in CPUs, GPUs, motherboards, and storage devices. The tool supports a wide range of sensor hardware found on modern systems, including Intel and AMD processors, NVIDIA and AMD graphics cards, SMART temperature sensors on storage drives, and many motherboard monitoring chips. Users can view monitored data directly within the application, as customizable desktop gadgets, or through a system tray interface, making it easy to keep an eye on system health at a glance. OpenHardwareMonitor runs without the need for a traditional installation (it can be run portably) and on systems configured with the appropriate runtime (e.g., .NET or Mono). -
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ShellNewHandler is an Open-Source Tool to enable/disable ShellNew entries, aka New File context menu entries from Windows Explorer in Vista and Windows 7. Check or uncheck items to enable a desktop right-click context menu item. No need to install.
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Collapse Launcher
An Advanced Launcher for miHoYo/HoYoverse Games
Collapse was originally designed for Honkai Impact 3rd. However, as the project evolved, this launcher is now a game client for all currently released miHoYo Games. Collapse came from the Honkai Impact translation in Chinese and Japanese. The word came from or Bēng huài in Chinese and also or Houkai in Japanese, both meaning "Collapse" which is why we chose it as our launcher name with the added inspiration that this was supposed to be an alternative (enhanced) launcher for Honkai Impact 3rd in the first place. -
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