Open Source C# System Software - Page 2
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C# System Software
View 8645 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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Easily Host LLMs and Web Apps on Cloud RunRun frontend and backend services, batch jobs, host LLMs, and queue processing workloads without the need to manage infrastructure. Cloud Run gives you on-demand GPU access for hosting LLMs and running real-time AI—with 5-second cold starts and automatic scale-to-zero so you only pay for actual usage. New customers get $300 in free credit to start.
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Build AI Apps with Gemini 3 on Vertex AIVertex AI gives developers access to Gemini 3—Google’s most advanced reasoning and coding model—plus 200+ foundation models including Claude, Llama, and Gemma. Build generative AI apps with Vertex AI Studio, customize with fine-tuning, and deploy to production with enterprise-grade MLOps. New customers get $300 in free credits.
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libusbK
A complete software solution for windows usb devices
libusbK is a complete driver/library solution for vendor class usb device interfaces. If you are a usb developer or usb device manufacturer seeking a driver solution for a new USB widget then libusbK could be for you. libusbK encompasses a 100% WinUSB compatible api/funtion set. All WinUSB power/pipe polices are fully supported by the libusbK driver. In Addition, libusbK has full support for isochronous endpoints and an extensive set of additional modules to simplify development. Source code repository using github: https://github.com/mcuee/libusbk -
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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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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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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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$300 in Free Credit for Your Google Cloud ProjectsLaunch your next project with $300 in free Google Cloud credit—no hidden charges. Test, build, and deploy without risk. Use your credit across the Google Cloud platform to find what works best for your needs. After your credits are used, continue building with free monthly usage products. Only pay when you're ready to scale. Sign up in minutes and start exploring.
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OpenTabletDriver
Open source, cross-platform, user-mode tablet driver
OpenTabletDriver is an open-source, cross-platform, user mode tablet driver. The goal of OpenTabletDriver is to be cross-platform as possible with the highest compatibility in an easily configurable graphical user interface. OpenTabletDriver functions as two separate processes that interact with each other seamlessly. The active program that does all of the tablet data handling is OpenTabletDriver.Daemon. The daemon must be started in order for anything to work, however, the GUI is unnecessary. If you have existing settings, they should apply when the daemon starts. The requirements to build OpenTabletDriver are consistent across all platforms. Running OpenTabletDriver on each platform requires different dependencies. Run build.ps1 to produce binary builds to 'bin' folder. These builds will run in portable mode by default. -
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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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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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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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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. -
Managed MySQL, PostgreSQL, and SQL Databases on Google CloudCloud SQL is a fully managed relational database for MySQL, PostgreSQL, and SQL Server. We handle patching, backups, replication, encryption, and failover—so you can focus on your app. Migrate from on-prem or other clouds with free Database Migration Service. IDC found customers achieved 246% ROI. New customers get $300 in credits plus a 30-day free trial.
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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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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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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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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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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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https://github.com/cbeannn
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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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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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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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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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Turn Visual Studio into a powerful HMI/SCADA development package by simply dragging and dropping, no coding required. DF1, Ethernet/IP for Allen Bradley PLC controllers, and many more drivers. Free
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oto the autoclicker
The fastest auto clicker for windows
This auto clicker is the fastest auto clicker. It is a full-fledged auto clicker with one mode of auto clicking, at your dynamic cursor location. The maximum amounts of clicked can also be set (or left as infinite). Hotkeys work in the background for convenience. If someone finds an autoclicker they think is faster please let me know in the discussion window. Has currently only been tested on Windows 11, so if you experience any problems on other OS' please let me know. Might work on linux. It was made with C# .NET8 and WPF -
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Winslop
De-slop Windows
Winslop is a utility that provides effortless window management on desktop environments, especially for macOS and other systems where native tiling is limited by default. It gives users keyboard-driven control over window layouts, snapping, resizing, and workspace organization without requiring heavy configuration or window manager expertise. By assigning intuitive keyboard shortcuts, users can instantly tile windows to halves, thirds, quadrants, or custom presets, streamlining multi-task workflows where quickly reshaping the screen space is essential. The interface aims for simplicity: it stays out of the way when not needed, only intercepting input when window actions are explicitly triggered, so it doesn’t disrupt regular typing or focus. Winslop also supports multi-monitor configurations, enabling users to manage windows across screens with consistent behavior and predictable layouts. -
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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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respite vpn - ssh & openvpn injector
Bypass your ISP's firewalls and connect to the internet!
Source: https://github.com/AlizerUncaged/HTTP-Injector respite is a SSH/openVPN client that allows you to connect to the internet with custom injected HTTP Proxy headers. This application requires Java (https://www.java.com/en/download/) and .Net 4.5 (https://www.microsoft.com/en-ph/download/details.aspx?id=42642 .Net 4.5 is already preinstalled in Windows 10). There are many SSH and OpenVPN Server providers in the internet, one is https://www.tcpvpn.com HTTP Proxy responses override (source code): https://github.com/AlizerDoesJava/respite-proxy-override Please rate, any feedback is appreciated. The application and server providers are free.
