Open Source C# Software - Page 6
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C# Software
Browse free open source C# Software and projects below. Use the toggles on the left to filter open source C# Software by OS, license, language, programming language, and project status.
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N_m3u8DL-RE
Cross-Platform, modern and powerful stream downloader
N_m3u8DL-RE is a modern cross-platform command-line downloader designed to capture and save streaming media delivered through protocols such as HLS, DASH, and MSS. The tool enables users to download both video-on-demand and live streams, then automatically process and merge media segments into playable files. Built with performance and flexibility in mind, it supports multiple operating systems including Windows, Linux, and macOS. The project includes extensive command-line options for controlling output paths, naming patterns, and temporary storage behavior. It is widely used in advanced media workflows where automated stream acquisition and local archiving are required. Overall, N_m3u8DL-RE functions as a powerful and actively developed utility for handling modern streaming media downloads. -
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MPos - Mouse Position
Mouse coordinates and DPI information for Windows 10
MPos is a minimalistic and easy to use tool to track the current position of the cursor on the screen. MPos especially considers High-DPI monitors and DPI scaling of Windows 10. The mouse position is provided in physical/ unscaled Windows pixels and in coordinates scaled by DPI-virtualization. The tool also provides information about the DPI scaling and the raw/ physical DPI of the current monitor. Note: MPos requires Windows 8.1 or newer and .NET Framework v.4.6 or newer. Get support: https://github.com/bluegrams/MPos/issues Support the development: https://ko-fi.com/alxnull -
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VGMToolbox is a C# based tool to assist VGM collectors and dumpers. It includes tools to extract, optimize, and build VGM formats as well as auditing and exploration utilities. [GBS, KSS, MDX, NSF(E), SID, S98, SPC, VGM, XA, XMA, xSF (PSF/PSF2/etc)]
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SuperPuTTY
The SuperPuTTY Window Manager for putty sessions
SuperPuTTY is a Windows-based session manager and terminal emulator designed to enhance the usability of PuTTY, one of the most widely used SSH and telnet clients. Rather than replacing PuTTY, SuperPuTTY provides a multi-tabbed, dockable interface that allows users to open, organize, and manage multiple PuTTY sessions simultaneously from a single window. It supports various connection types including SSH, Telnet, Rlogin, Raw, and RDP (Remote Desktop Protocol), enabling both console and graphical remote access in one environment. SuperPuTTY adds convenience features such as session grouping, tab persistence, quick reconnect, and credential reuse across sessions. It also integrates a simple scripting language, allowing automation of repetitive tasks like login sequences or remote command execution. The interface is built using .NET and C#, offering an extensible architecture that supports plugins and customizable hotkeys. -
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Monitorian
A Windows tool to easily adjust brightness of multiple monitors
Monitorian is a desktop utility designed for Windows that gives users a simple and centralized way to control the brightness (and optionally contrast) of multiple displays from one place. It supports both built-in laptop screens and external monitors, allowing adjustments either on a per-monitor basis or all together at once, making it especially useful for multi-monitor setups. The app displays sliders for each connected monitor, and on systems with ambient light sensors it can show both the configured brightness and the sensor-adjusted brightness to help you fine-tune lighting according to your environment. Monitorian also lets you adjust the range of brightness and contrast values for each monitor so you can set custom limits that better match your preferences. Usability features include gesture support on precision touchpads and easy renaming of monitors to keep them organized in the UI. Its interface sits in the system tray for quick access. -
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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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NSwag
The Swagger/openAPI toolchain for .NET, ASP.NET Core and TypeScript
NSwag is a Swagger/OpenAPI 2.0 and 3.0 toolchain for .NET, .NET Core, Web API, ASP.NET Core, TypeScript (jQuery, AngularJS, Angular 2+, Aurelia, KnockoutJS and more) and other platforms, written in C#. The OpenAPI/Swagger specification uses JSON and JSON Schema to describe a RESTful web API. The NSwag project provides tools to generate OpenAPI specifications from existing ASP.NET Web API controllers and client code from these OpenAPI specifications. The project combines the functionality of Swashbuckle (OpenAPI/Swagger generation) and AutoRest (client generation) in one toolchain (these two libs are not needed). This way a lot of incompatibilities can be avoided and features that are not well described by the OpenAPI specification or JSON Schema are better supported (e.g. inheritance, enum and reference handling). The NSwag project heavily uses NJsonSchema for .NET for JSON Schema handling and C#/TypeScript class/interface generation. -
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Git Extensions
Git Extensions is a standalone UI tool for managing git repositories.
Git Extensions is now hosted on GitHub ============================== Please update your bookmarks and use the links below for downloading and reporting issues. * Download latest version (Windows only): https://github.com/gitextensions/gitextensions/releases/latest * Download latest cross-platform version (Windows and Linux/Mac): https://github.com/gitextensions/gitextensions/releases/v2.51.05 * Issue tracker: http://github.com/gitextensions/gitextensions/issues * Source code: http://github.com/gitextensions/gitextensions * Online manual: https://git-extensions-documentation.readthedocs.org/en/latest/ -
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PinWin - Pin On Top
Pin any window to be always on top of the screen
PinWin is a minimal Windows system tray application that allows you to pin any windows to the top of the screen with one click. Support the development: https://ko-fi.com/alxnull -
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ModAssistant
Simple Beat Saber Mod Installer
ModAssistant is a simple PC mod installer for Beat Saber, using mods from BeatMods. Beat Saber is the popular VR rhythm game where players must slash the beats as they fly towards them to the beat of lively music. ModAssistant comes with a number of great features like dependency resolution, mod uninstallation, and a complex theming engine. It features light, dark, BSMG and light pink themes, and can even have your own custom theme! Have more fun playing Beat Saber by customizing your experience with ModAssistant! -
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ModernFlyouts
Modern UI replacement for Windows flyouts with customizable features
ModernFlyouts is an open source application designed to replace the default Metro-style flyouts in Windows with a more modern, Fluent Design–based user interface. Instead of the old built-in popups for system feedback like volume, brightness, and airplane mode, ModernFlyouts temporarily intercepts those events and displays customizable flyouts that blend more seamlessly with recent Windows UI aesthetics. It extends beyond audio flyouts to cover media controls, brightness changes, airplane mode toggles, and even lock key indicators such as Caps Lock and Num Lock, offering a unified experience for all these system notifications. Users can adjust not just the look but the behavior of these flyouts (including layout, position, opacity, and animation) letting it feel more natural to individual preferences. The project’s roots trace back to AudioFlyout by ADeltaX, with further enhancements added by the community to support more flyout types and improved interaction. -
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Auto Screen Capture
Automated screen capture utility
A portable and command line friendly application that takes screenshots while you work and play. This software is free and open source but if you find it useful then a small donation is appreciated! https://paypal.me/codewalker777 -
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Ascii Generator 2 (Ascgen2) is an application to convert images into high quality ASCII art - text that accurately represents the original image. The only program of its kind to support variable width fonts and real-time output adjustment and more.
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MSBuild
The Microsoft Build Engine (MSBuild) build platform for .NET and VS
The Microsoft Build Engine is a platform for building applications. This engine, which is also known as MSBuild, provides an XML schema for a project file that controls how the build platform processes and builds software. Visual Studio uses MSBuild, but MSBuild doesn't depend on Visual Studio. By invoking msbuild.exe on your project or solution file, you can orchestrate and build products in environments where Visual Studio isn't installed. Visual Studio uses MSBuild to load and build managed projects. The project files in Visual Studio (.csproj, .vbproj, .vcxproj, and others) contain MSBuild XML code that executes when you build a project by using the IDE. Visual Studio projects import all the necessary settings and build processes to do typical development work, but you can extend or modify them from within Visual Studio or by using an XML editor. Starting with Visual Studio 2022, when you build in Visual Studio, the 64-bit version of MSBuild is used. -
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Windows ACME Simple (WACS)
A simple ACME client for Windows (for use with Let's Encrypt et al.)
This is a ACMEv2 client for Windows that aims to be very simple to start with, but powerful enough to grow into almost every scenario. A very simple interface to create and install certificates on a local IIS server. A more advanced interface for many other use cases, including Apache and Exchange. Automatically creates a scheduled task to renew certificates when needed. Get certificates with wildcards, international names, OCSP Must Staple extension (optional). Re-use private keys for DANE, use EC crypto or bring your own CSR. Advanced toolkit for DNS, HTTP and TLS validation: SFTP/FTPS, acme-dns, Azure, Route53, Cloudflare and many more. Store your certificates where and how you want them: Windows, IIS Central Store, .pem files, .pfx file or KeyVault. Compatible with all popular ACME services, including Let’s Encrypt, ZeroSSL, DigiCert, Sectigo, Buypass, Keyon and others. Completely unattended operation from the command line. -
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Terra Incognita
GPS mapping and management software
Program for downloading web source maps or local files maps for various programs or GPS devices. Terra Incognita™ main features: navigating through map by simple clicking generating OziExplorer, Kmz, JNX, GPSdash or TrekBuddy calibrated map file possibility to use many web map sources Google Maps™, Bing™, Open street map ... managing of waypoints or tracks saved in gpx and many other formats selected user defined map area for saving simplified and easy user interface downloading and saving maps on background automatic split of very large areas to many smaller map files -
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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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BBDown
Bilibili Downloader
BBDown is a free, efficient command‑line downloader and parser for content from Bilibili (Chinese video platform). It supports fetching videos via URLs or content IDs (e.g., av, BV, ep, ss), can be installed as a global .NET tool, and is actively maintained with automated builds and releases. This project is for personal study, research and non-commercial use only. When using this tool, users themselves ensure compliance with relevant laws and regulations, in particular legal provisions related to copyright. The developer shall not be liable for any copyright disputes or legal liability arising from the use of this tool. Users are advised to exercise caution when using it, ensuring that their actions are lawful and compliant, and to use the content in question only with lawful authorization. -
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NVIDIA Profile Inspector
Modify game profiles inside the internal driver database
NVIDIA Profile Inspector is a specialized utility that allows users to view and modify hidden graphics driver settings within NVIDIA’s internal profile database, providing deeper control than the official NVIDIA Control Panel. It exposes advanced and undocumented configuration options that can influence rendering behavior, performance optimization, and compatibility for specific games. Users can create, edit, and assign profiles for individual applications, enabling fine-grained tuning of GPU behavior beyond standard settings. The tool is particularly popular among enthusiasts who want to optimize performance, troubleshoot graphical issues, or enable experimental features such as custom DLSS configurations. It provides a detailed interface for browsing and editing driver parameters, making it possible to adjust settings that are otherwise inaccessible. -
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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. -
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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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Rubberduck
Every programmer needs a rubberduck. COM add-in for the VBA & VB6 IDE
Rubberduck aims to bring the VBIDE into this century. Rubberduck understands Classic-VB code like no other add-in, giving it superior static code analysis capabilities that go far above and beyond what is possible with simple text-based analysis. Avoid common pitfalls (some not-so-common) with dozens (100+) of configurable inspections. Gain full control over module and member attributes, create a virtual folder hierarchy, and document modules and procedures, all with special comment annotations. Navigate a Classic-VB project like never before, quickly locating identifier references, interface implementations, and anything else that has a name. Add a full folder structure for organizing your modules. Write code that runs your code and verifies its output is as expected, given controlled inputs. Organize tests into categories, run them directly in the VBIDE, and view results in a dedicated explorer toolwindow. -
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Script Hook V .NET (SHVDN)
An ASI plugin for Grand Theft Auto V
ScriptHookVDotNet is an open-source scripting framework for Grand Theft Auto V that enables developers to create and run custom scripts using languages such as C# and VB within the game environment. It acts as a bridge between the game engine and managed code, allowing modders to interact with game systems through a structured and object-oriented API. Built on top of the original Script Hook V, it simplifies the scripting process by providing higher-level abstractions and reducing the need to work directly with low-level native functions. The framework supports real-time script execution and reloading, enabling developers to test and iterate on their modifications without restarting the game. It also includes an in-game console and debugging capabilities, making development more efficient and interactive. ScriptHookVDotNet is widely used in the GTA V modding community to create custom gameplay mechanics, tools, and enhancements. -
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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.
