Open Source C# Software for Windows

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

  • Simple, Secure Domain Registration Icon
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    MongoDB Atlas runs apps anywhere

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  • 1
    KeePass

    KeePass

    A lightweight and easy-to-use password manager

    KeePass Password Safe is a free, open source, lightweight, and easy-to-use password manager for Windows, Linux and Mac OS X, with ports for Android, iPhone/iPad and other mobile devices. With so many passwords to remember and the need to vary passwords to protect your valuable data, it’s nice to have KeePass to manage your passwords in a secure way. KeePass puts all your passwords in a highly encrypted database and locks them with one master key or a key file. As a result, you only have to remember one single master password or select the key file to unlock the whole database. And the databases are encrypted using the best and most secure encryption algorithms currently known, AES and Twofish. See our features page for details.
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    Downloads: 837,257 This Week
    Last Update:
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  • 2
    Bulk Crap Uninstaller

    Bulk Crap Uninstaller

    Remove large amounts of unwanted applications quickly.

    Bulk Crap Uninstaller (in short BCUninstaller or BCU) is a free (as in speech and beer) bulk program uninstaller with advanced automation. It excels at removing large amounts of applications with minimal to no user input, while requiring next to no technical knowledge. It can detect most applications and games (even portable or not registered), clean up leftovers, force uninstall, automatically uninstall according to premade lists, and much more. Bulk Crap Uninstaller is licensed under Apache 2.0 open source license, and can be used in both private and commercial settings for free and with no obligations, as long as no conditions of the license are broken.
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    Downloads: 7,343 This Week
    Last Update:
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  • 3
    SharpDevelop

    SharpDevelop

    A free IDE for C#, VB.NET, & Boo projects on Microsoft's .NET platform

    SharpDevelop is the open-source IDE for the .NET platform. Write applications in languages including C#, VB.NET, F#, IronPython and IronRuby, as well as target rich and reach: Windows Forms or WPF, as well as ASP.NET MVC and WCF. It starts from USB drives, supports read-only projects, comes with integrated unit and performance testing tools, Git, NuGet and a lot more features that make you productive as a developer.
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    Downloads: 703 This Week
    Last Update:
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  • 4
    PNotes
    PNotes is light-weight, flexible, skinnable manager of virtual notes on your desktop. It supports multiple languages, individual note's settings, transparency and scheduling. Absolutely portable as well - no traces in registry. PNotes.NET edition requires .NET framework 4 Client Profile
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    Downloads: 350 This Week
    Last Update:
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  • Our Free Plans just got better! | Auth0 Icon
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  • 5
    FCKeditor

    FCKeditor

    FCKeditor (retired)

    FCKeditor is the previous version of CKEditor and has been discontinued after version 2. The new CKEditor is redesigned from the ground up, offering more WYSIWYG text editing features, enhanced security and better integration. Don’t force yourself with retro FCKeditor. Switch to the new, cool CKEditor at ckeditor.com
    Downloads: 35 This Week
    Last Update:
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  • 6
    Mail Notifier

    Mail Notifier

    Mail Notifer for Windows

    Mail Notifier is free, modern email notifier with the latest user interface trends for Windows 10/11. It supports multiple accounts and IMAP/POP3 protocols. Enjoy customizable notifications, message previews, and more, all in 34 languages! For more details, please refer to the readme.txt file (Files tab, description below). Note: Gmail support is currently unavailable due to verification requirements by Google. Note: Outlook.com support is currently unavailable due to moving to OAuth2 authentication from login/password at Outlook servers.
    Downloads: 25 This Week
    Last Update:
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  • 7
    CollimationCircles

    CollimationCircles

    Collimation Circles, app for easy telescope collimation

    This program was inspired by Mire De Collimation program written by Gilbert Grillot and Al's Collimation Aid. I combined best features of both and addes some of my own. Purpose of this program is not to reinvent the wheel, but rather to learn new technologies, become better at colimating my telescope and to learn something new. Main purpose of this program is to help you with aligning optical elements of your telescope such as secondary mirror, primary mirror, focuser, etc. Collimation Circles is developed with .NET 7 and AvaloniaUI Framework using MVVM architecture patern. Program was tested on Windows 10 and 11, Ununtu Linux 22.04.1 LTS (Wayland) and Raspberry PI OS Bullseye. I'm not able to test it on macOS, but it should work. Suggestions and contributions are welcome!
    Downloads: 10 This Week
    Last Update:
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  • 8
    If you have many documents those written in several type such as pdf, chm, doc, html... How can you fast search their contents concurrently? Rebook software solves that problems. How can you get differences things between them? Rebook software supports that problems. How can you get similar things between them? Rebook software supports that problems. While you are typing a document/text, how can you fast reference the give contents in your documents? Use Rebooks software, it is called suggestion feature. How can you easy managed your document/file? Rebook software supports that problems. Rebooks search out your "text quotes" from your documents.
    Downloads: 1 This Week
    Last Update:
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  • 9
    Ankete, sistem za vodenje vprasanj in zadovoljstev od uporabnikov
    Downloads: 0 This Week
    Last Update:
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  • Build Securely on Azure with Proven Frameworks Icon
    Build Securely on Azure with Proven Frameworks

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  • 10
    EtnoFletno

    EtnoFletno

    A platform for sharing ethnomusicological content.

    EtnoFletno is a mobile and web platform of Slovenian folk songs. The aim is to revive our connection with folk song and music, and use modern technologies to make it accessible for everyone. Available on all major mobile platforms and web browsers, EtnoFletno offers standard search and browsing, as well as more advanced features, such as melody based search and query-by-humming. Developed in partnership with the Laboratory for Graphics and Multimedia (University of Ljubljana, Faculty of Computer and Information Science) and the Institute of Ethnomusicology (SRC SASA). The project received Structural Funds by the Ministry of Education, Science and Sport, Republic of Slovenia.
    Downloads: 0 This Week
    Last Update:
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  • 11
    Full-featured, fully customizable, multilingual, skinable, multi-document web based WYSIWYG HTML editor control. Microsoft Internet Explorer, Gecko based browsers (Firefox, Netscape, Mozilla) and Opera 9 are supported.
    Downloads: 0 This Week
    Last Update:
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  • 12

    TimeClock

    TimeClock register clock in/out of employees company for timesheets

    A time clock, it’s a time recorder used to assist in tracking the hours worked by an employee of a company. This plugin is an example of the possibilities of the TM4HR possibility to import data from outside the main program, so it is a separate and independent program that save data in localdb or MDB or XML (as you prefer). Admin can create/edit/delete employees, create file for export (xml or cvs or text), create/edit/delete “time entries”, print a report of “time entries”, and edit Settings.
    Downloads: 0 This Week
    Last Update:
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  • 13
    Aplikacija ugankarski slovar tujk je v bistvu pomoč pri reševanju križank in ostalih ugank. Aplikacija je napisana v .NET 2.0 frameworku. Za bazo podaktov uporablja SQLite.
    Downloads: 0 This Week
    Last Update:
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  • 14
    rabcr

    rabcr

    2d game, creative, surival,

    RabigonCraft The most of My World is a 2D survival game (it can be also played in creative mode). This game is free and doesn't have advertising. The game of survival begins with the collection of basic raw materials - stones or fallen twigs. From them, you will compile primitive tools with which you will start extracting raw materials. Soon you will make devices with which you will not be so upset. In the end, maybe you build a rocket and go to unexplored space parts. Game has beautiful animations and original graphics.
    Downloads: 0 This Week
    Last Update:
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  • 15
    VCD-db is an web based movie catalog software. It supports multiple users to collect, manage and work with their media catalog. New movies can easily be added through several methods, for example by fetching data straight from websites such as imdb.com
    Downloads: 0 This Week
    Last Update:
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