Browse free open source C# Terminals and projects below. Use the toggles on the left to filter open source C# Terminals by OS, license, language, programming language, and project status.

  • Veeam Data Platform v13.1 - Get Your Free Trial Icon
    Veeam Data Platform v13.1 - Get Your Free Trial

    Secure by design, portable by default. Recover clean, fast, anywhere. Start a free trial.

    Try Veeam Data Platform today. Experience the unified platform that's secure by design, portable by default, and proven to recover clean, fast, and anywhere.
    Try it Free
  • One Monitoring Tool for IT, OT and Cloud | Free Trial Icon
    One Monitoring Tool for IT, OT and Cloud | Free Trial

    Vendor-agnostic monitoring across on-prem servers, cloud platforms and OT devices, all in one dashboard. No more tool sprawl.

    Modern infrastructure spans data centers, cloud platforms and factory floors, and every blind spot between them is a risk. PRTG supports SNMP, WMI, SSH and other standard protocols to monitor IT, OT and hybrid environments through one customizable dashboard. Build the views your team needs, from network health to application performance, without switching tools. Try PRTG free for 30 days now.
    Try PRTG Free
  • 1
    YAT

    YAT

    Yet Another Terminal :: Serial Communication :: Engineer/Test/Debug

    Engineering, testing and debugging of serial communication. Supports RS-232/422/423/485 as well as TCP/IP Client/Server/AutoSocket, UDP/IP Client/Server/PairSocket and USB Ser/HID. Optimized for simple command sets of e.g. embedded systems.
    Leader badge
    Downloads: 770 This Week
    Last Update:
    See Project
  • 2
    Windows ACME Simple (WACS)

    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.
    Downloads: 37 This Week
    Last Update:
    See Project
  • 3
    ArchiSteamFarm

    ArchiSteamFarm

    C# application with primary purpose of farming Steam cards

    ASF is a C# application with the primary purpose of farming Steam cards from multiple accounts simultaneously. Unlike Idle Master which works only for one account at a given time, while requiring Steam client running in the background and launching additional processes imitating "game-playing" status, ASF doesn't require any Steam client running in the background, doesn't launch any additional processes and is made to handle unlimited Steam accounts at once. In addition to that, it's meant to be run on servers or other desktop-less machines and features full cross-OS support, which makes it possible to launch on any operating system with .NET Core runtime, such as Windows, Linux, and macOS. ASF is possible thanks to the gigantic amount of work done in the marvelous SteamKit2 library. Today, ASF is one of the most versatile Steam power tools, allowing you to make use of many features that were implemented over time.
    Downloads: 28 This Week
    Last Update:
    See Project
  • 4
    Harmony

    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.
    Downloads: 24 This Week
    Last Update:
    See Project
  • Cut Data Warehouse Costs by 54% Icon
    Cut Data Warehouse Costs by 54%

    Easily migrate from Snowflake, Redshift, or Databricks with free tools.

    BigQuery delivers 54% lower TCO with exabyte scale and flexible pricing. Free migration tools handle the SQL translation automatically.
    Start Free
  • 5
    PEASS-ng

    PEASS-ng

    Privilege Escalation Awesome Scripts SUITE

    These tools search for possible local privilege escalation paths that you could exploit and print them to you with nice colors so you can recognize the misconfigurations easily. All the scripts/binaries of the PEAS suite should be used for authorized penetration testing and/or educational purposes only. Any misuse of this software will not be the responsibility of the author or of any other collaborator. Use it at your own machines and/or with the owner's permission. Here you will find privilege escalation tools for Windows and Linux/Unix and MacOS. Find the latest versions of all the scripts and binaries in the releases page. Check the parsers directory to transform PEASS outputs to JSON, HTML and PDF.
    Downloads: 16 This Week
    Last Update:
    See Project
  • 6
    Fluent Terminal

    Fluent Terminal

    A Terminal Emulator based on UWP and web technologies

    FluentTerminal is a modern terminal emulator for Windows built using UWP (Universal Windows Platform) and web technologies. It offers a sleek, tabbed interface and supports a variety of shell environments like PowerShell, CMD, WSL, plus remote shells via SSH/Mosh. Terminal for PowerShell, CMD, WSL or custom shells. Built-in support for SSH and Mosh connections. Supports tabs and multiple windows. Theming and appearance configuration. Import/Export themes, import iTerm themes.
    Downloads: 11 This Week
    Last Update:
    See Project
  • 7
    Universal BootLoader Tool helps you easily recover from a failed rom flash, and is known to turn an free update rom into a full rom. (e.g. from the free WM5 update rom available for hx4700 Pocket PCs on HP.com) Only tested with HP iPAQ Pocket PCs.
    Leader badge
    Downloads: 128 This Week
    Last Update:
    See Project
  • 8
    PuTTY Session Manager
    PuTTY Session Manager is a tool that allows system administrators to organise their PuTTY sessions into folders and assign hotkeys to favourite sessions. Multiple sessions can be launched with one click. Requires MS Windows and the .NET 2.0 Runtime.
    Downloads: 39 This Week
    Last Update:
    See Project
  • 9
    SerialToIP is a simple Terminal Server software providing transparent pipe either in TCP server or TCP client socket mode from TCP/IP to a pre-configured serial port. Implemented in C# for .NET 2.0 so the command line version could work in Mono-runtime as well.
    Leader badge
    Downloads: 14 This Week
    Last Update:
    See Project
  • $300 Free Credits to Build on Google Cloud Icon
    $300 Free Credits to Build on Google Cloud

    New customers can spin up VMs, build with AI, and query data at no cost.

    Put your $300 in credit toward real workloads, then keep building with free monthly usage for 20+ products. No commitment and no charge until you upgrade.
    Start Free
  • 10
    Terminal.Gui

    Terminal.Gui

    Console-based user interface toolkit for .NET applications

    A toolkit for building console GUI apps for .NET, .NET Core, and Mono that works on Windows, the Mac, and Linux/Unix. In addition, a complete Xterm/Vt100 terminal emulator that you can embed is now part of XtermSharp, you just need to pull TerminalView.cs into your project. Works on Windows, Mac, and Linux. Terminal drivers for Curses, Windows Console, and the .NET Console mean Terminal.Gui works well on both color and monochrome terminals and has mouse support on terminal emulators that support it. Both keyboard and mouse input are supported, including limited support for drag & drop. Terminal.Gui supports both Absolute layout and an innovative UI layout system referred to as Computed Layout. Computed Layout makes it easy to layout controls relative to each other and enables dynamic console GUIs.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 11
    TcpTerminal

    TcpTerminal

    TCP Terminal is a tool for testing and debugging TCP communication.

    TCP Terminal is a tool for testing and debugging TCP communication. - Works both as a server and as a client. - Accepts input and prints output in HEX and ASCII format. - Separate display of sent and received data.
    Downloads: 28 This Week
    Last Update:
    See Project
  • 12

    SerialPort to Keyboard

    Posts characters from Serialport to the OS as Keystrokes

    See homepage: http://sharperdevelopment.blogspot.de/2013/01/replacing-win-xp-accessibility-features.html
    Leader badge
    Downloads: 23 This Week
    Last Update:
    See Project
  • 13
    It is a simple implementation of SMTP client, which has functions of sending email and friends list. I will enrich its functionality gradually.
    Downloads: 10 This Week
    Last Update:
    See Project
  • 14
    Remote Desktop Client for the GNOME Desktop. Supported protocols: RDP, VNC, SSH. Configured sessions can be saved to the built in list. Additional programs required: rdesktop, tightvnc, ssh, gnome-terminal. Application can be run with Mono runtime.
    Leader badge
    Downloads: 2 This Week
    Last Update:
    See Project
  • 15
    .NET VNC Viewer is a VNC viewer written entirely in C#. It is binary compatible with Smartphones, Pocket PCs and Windows desktops (.NET CF or .NET Framework). I write this because other VNC viewers on Pocket PC do not do full screen and screen rotation.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 16
    SerialPortNet is an open source serial port communication library for Microsoft .NET. It's written in c#, implements complete .NET 2.0 specifications, and is designed to allow for multiple OSes and add-on 3rd party Serial to Network adapters.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 17
    Serial Data Logger

    Serial Data Logger

    A configurable serial data terminal and recorder

    Current stable release: version 1.3 (2022-11-10) More info in wiki.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 18
    CitrixTS4Linux is a GUI remote access server application written in C and C++ to allow access to RPM-based Linux terminal servers via the free Citrix ICA client.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 19
    Simple Serial COM read/write program. I needed it for Caller ID read modem driver so it has command auto complete for AT commands. It is a good replacement for HyperTerminal. Made for .NET Framework 2.0
    Downloads: 2 This Week
    Last Update:
    See Project
  • 20
    Console Grapher

    Console Grapher

    Graphing calculator within the Windows desktop console

    Direct link to source code: http://sourceforge.net/projects/consolegrapher/files/Source/ConsoleGrapher_Source.zip/download . Just what you needed: a simple, down-to-earth two dimensional graphing calculator inside the elegance of the Windows console! This is a program that I wrote as a method for mastering the C# programming language. Though the features are not what you would expect from a program written and sold by a corporation, you may find it an entertaining tool Also notice that no installation is required, meaning it will not put annoying icons on your desktop and start menu, and you are free to delete it at will. If you know coding, be sure to check out the source code, which is in the form of a zipped-up Visual Studio solution. If you would like to import some of the functions into your own project, the code is free to be used.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 21
    Free Serial Terminal

    Free Serial Terminal

    Communicate with devices at serial ports.

    Downloads: 1 This Week
    Last Update:
    See Project
  • 22

    Protocol tool

    Hexadecimal strings test tool

    This is a software/hardware development tool that allows the user to send strings on an interface (parallel,serial, network or other), specified in hexadecimal or strings or a combination of these. The strings can be retrieved/stored from/to a file.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 23
    System tray caller id applet for Windows based on .NET framework. Turns on caller ID function of the modem, and when any output occurs (a call comes in), a small log window appears showing all text, verbatim.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 24
    Uart32

    Uart32

    Win32 API wrappers for accessing COM Uart in blocking mode

    Uart32 is a C++ wrapper around the win32 Serial Port API that allows blocking-mode access to the COM port. This library works great for accessing a UART serial port from a background worker thread. It features: a simple c++ class. (temporarily removed for maintainance. Use DLL API Instead) built in per access timeout on data receive. a C-API wrapper that is exportable to C# DLL import class
    Downloads: 1 This Week
    Last Update:
    See Project
  • 25
    ASP.NET Core API Endpoints

    ASP.NET Core API Endpoints

    A project for supporting API Endpoints in ASP.NET Core web apps

    It is a lightweight library that promotes building web APIs using a feature-focused endpoint pattern instead of traditional controller-based architecture. The project encourages developers to create small, single-responsibility endpoint classes that improve code clarity, testability, and maintainability in modern applications. It provides base classes and conventions that reduce boilerplate while keeping full compatibility with standard core middleware, routing, and dependency injection. The approach aligns well with vertical slice architecture and clean architecture principles, helping teams organize APIs around use cases rather than technical layers. ApiEndpoints is designed to remain minimal and non-intrusive so developers retain full control over their application structure. Overall, it serves as a productivity-focused architectural helper for building clean and scalable core APIs.
    Downloads: 0 This Week
    Last Update:
    See Project
  • Previous
  • You're on page 1
  • 2
  • 3
  • Next