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

  • The AI workplace management platform Icon
    The AI workplace management platform

    Plan smart spaces, connect teams, manage assets, and get insights with the leading AI-powered operating system for the built world.

    By combining AI workflows, predictive intelligence, and automated insights, OfficeSpace gives leaders a complete view of how their spaces are used and how people work. Facilities, IT, HR, and Real Estate teams use OfficeSpace to optimize space utilization, enhance employee experience, and reduce portfolio costs with precision.
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  • Loan management software that makes it easy. Icon
    Loan management software that makes it easy.

    Ideal for lending professionals who are looking for a feature rich loan management system

    Bryt Software is ideal for lending professionals who are looking for a feature rich loan management system that is intuitive and easy to use. We are 100% cloud-based, software as a service. We believe in providing our customers with fair and honest pricing. Our monthly fees are based on your number of users and we have a minimal implementation charge.
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  • 1
    PatchCleaner

    PatchCleaner

    Windows Installer Directory Cleaner

    Cleans your windows Installer directory of orphaned and redundant installation (.msi) and patch (.msp) files
    Leader badge
    Downloads: 7,364 This Week
    Last Update:
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  • 2
    Kickass Undelete

    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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    Downloads: 550 This Week
    Last Update:
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  • 3

    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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    Downloads: 184 This Week
    Last Update:
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  • 4
    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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    Downloads: 170 This Week
    Last Update:
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  • Next-Gen Encryption for Post-Quantum Security | CLEAR by Quantum Knight Icon
    Next-Gen Encryption for Post-Quantum Security | CLEAR by Quantum Knight

    Lock Down Any Resource, Anywhere, Anytime

    CLEAR by Quantum Knight is a FIPS-140-3 validated encryption SDK engineered for enterprises requiring top-tier security. Offering robust post-quantum cryptography, CLEAR secures files, streaming media, databases, and networks with ease across over 30 modern platforms. Its compact design, smaller than a single smartphone image, ensures maximum efficiency and low energy consumption.
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  • 5

    Symlink Creator

    Program to create symlinks. Provides the CMD command as well.

    Just a small application I made to simplify the process of creating symbolic and hard links in Windows 7 and Windows 8 (likely Vista too). It is a GUI for the MKLINK command in Windows, which makes creating the links much easier. The program requires administrator permissions due to use of the command prompt, so you should run it as an administrator if you experience any problems. Note: It is not possible to create a hard link from a network share. You must use a symbolic link instead. Warning: If you incorrectly specify the destination path, such as having the destination and source paths backwards, it will delete the file/folder you are presumably trying to create a symlink from. You will be presented with a confirmation prompt that shows you which folder will be replaced/deleted. It is always a good idea to test this app on empty files or folders.
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    Downloads: 63 This Week
    Last Update:
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  • 6
    SystemTrayMenu

    SystemTrayMenu

    SystemTrayMenu - Browse and open your files easily

    SystemTrayMenu is an open source 'Desktop Toolbar' or 'Start Menu' alternative. It offers a clear, personalized menu which can be controlled via keyboard, mouse or touchscreen. Files, links and folders are organized in several levels as dropdown menus. Various options like appearance, hotkey, autostart and behavior can be adjusted. It is written in C# and using .NET 7. SystemTrayMenu is portable, so it does not need to be installed. After downloading the zip file, unzip the folder, then start SystemTrayMenu.exe. After starting the application the first time you have to choose the root directory. In this directory you should put shortcuts, files and folders (App, Game, Script, URL, Network), which you are often using and especially when you can not find them over the windows start menu search. You can also consider to put there all files from your desktop. If you have ideas, questions or a problem you can contact the developer Markus Hofknecht via GitHub or email.
    Downloads: 38 This Week
    Last Update:
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  • 7

    XCopy-GUI

    To ease copying files and folders in windows, based on xcopy

    Github: https://github.com/navidprox/XCopy-GUI Features: - Scope select option (root / subdirectories) - Inline exceptions, files/folders to ignore when copying - Save & load frequenty used exclude lists - Context menu shortcuts when right click on folders in windows explorer
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    Downloads: 21 This Week
    Last Update:
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  • 8
    FileGrab

    FileGrab

    Capture newly created files in Windows filesystems

    FileGrab is a tool that monitors a Windows filesystem for newly created files and copy those files to another location. It can be useful for honeypots, malware analysis, investigation scenarios and so on.
    Downloads: 36 This Week
    Last Update:
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  • 9
    DupTerminator

    DupTerminator

    DupTerminator will scan your directories for any duplicate files using

    DupTerminator - a program to search, delete, move, and rename duplicate file by comparing MD5 hash. The program is free and open source software.
    Downloads: 5 This Week
    Last Update:
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  • Turn traffic into pipeline and prospects into customers Icon
    Turn traffic into pipeline and prospects into customers

    For account executives and sales engineers looking for a solution to manage their insights and sales data

    Docket is an AI-powered sales enablement platform designed to unify go-to-market (GTM) data through its proprietary Sales Knowledge Lake™ and activate it with intelligent AI agents. The platform helps marketing teams increase pipeline generation by 15% by engaging website visitors in human-like conversations and qualifying leads. For sales teams, Docket improves seller efficiency by 33% by providing instant product knowledge, retrieving collateral, and creating personalized documents. Built for GTM teams, Docket integrates with over 100 tools across the revenue tech stack and offers enterprise-grade security with SOC 2 Type II, GDPR, and ISO 27001 compliance. Customers report improved win rates, shorter sales cycles, and dramatically reduced response times. Docket’s scalable, accurate, and fast AI agents deliver reliable answers with confidence scores, empowering teams to close deals faster.
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  • 10
    DirListing (Portable)
    A small application for listing the contents(files/folders/extensions) of a folder. The results includes file name length/full path length/maximum extensions. It supports exporting a report in .txt/.csv format with fully customizable contents.
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    Downloads: 10 This Week
    Last Update:
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  • 11

    USB File Copier

    Copy Files To Multiple USB drives simultaneous

    Copy a subdirectory on your drive to newly inserted USB memory drive. The program can simultaneous copy to many drives on insertion.
    Downloads: 8 This Week
    Last Update:
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  • 12
    EncrypIT

    EncrypIT

    Program to quickly and easily encrypt or decrypt files or directories

    Program to quickly and easily encrypt or decrypt files or directories using Encrypting File System (EFS) as well as add and remove domain user EFS permissions to a file. There is also a button to view the info on an encrypted file as well as for backing up a users EFS PFX certificate.
    Downloads: 4 This Week
    Last Update:
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  • 13
    CD Reader is a software for recovering datas from corrupted cds/dvds. This simple tool accurately recovers both individual files and full discs that your disc drive finds difficult to read due to scratches or other damages in the disc surface.
    Downloads: 5 This Week
    Last Update:
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  • 14
    This command-line program is an extended version of the built-in del command in Windows 2000/XP/2003. With xdel.exe you can delete files based on how old they are.
    Downloads: 4 This Week
    Last Update:
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  • 15

    Gutmann Algorithm Secure File Deletion

    Using Gutmann method for securely deleting files in Windows.

    Gutmann method uses 35 passes over the region to be deleted, 8 of them are Pseudo-random. Considered by some to be highly effective for preventing file recovery. Requires .NET Framework 4.0 --- Systems & Safety Establishment https://sarab.me Source Code available in c# with comments. Reference: http://www.cs.auckland.ac.nz/~pgut001/pubs/secure_del.html
    Downloads: 2 This Week
    Last Update:
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  • 16

    Context Menu (Shell Extension)

    Free configurable Windows Explorer context menu extension.

    ContextMenu is a free configurable shell extension allowing users to define their own menu items to be included in the Windows Explorer’s context menu. This project consists of two DLLs (x86 and x64) written in native C++ with plain access to the Win32-API representing the shell extension, a composer written in C# to be used to configure all shell extensions at once as well as of a help file explaining all necessary details. The composer is also available as x86 and x64 version. Note this shell extension is tested under Windows XP (64) and under Windows 7 (32). Furthermore, a parallel usage (multiple installations) of this shell extension is also possible.
    Downloads: 3 This Week
    Last Update:
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  • 17
    Little Disk Cleaner

    Little Disk Cleaner

    Free up valuable disk space

    Little Disk Cleaner is a open source program written in C# that removes any unneeded files to free up extra hard drive space and make windows run faster.
    Downloads: 3 This Week
    Last Update:
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  • 18

    Bulk File Rename

    A GUI for renaming large volumes of files in a folder.

    Bulk File Rename allows renaming of files in a standard Windows Form (instead of the command line ren command), and allows a variety of techniques for renaming: Remove Text, Replace Text, Prefix Root, Suffix Root, Prefix Extension, Suffix Extension, Insert At. Replace allows character remapping. Includes a preview of the file changes which will occur.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 19
    Extension Indexer
    This is a small software that permits to perform a scan of a directory and indexing every files by their extension. You can access and manage all files quickly grouped by extension, everywhere they are located. Requires .NET Framework 4.0
    Downloads: 1 This Week
    Last Update:
    See Project
  • 20
    FolderMerge

    FolderMerge

    Join the folders you want

    FolderMerge is a simple and easy-to-use instrument that is able to merge 2 folders into 1 by comparing file properties. The program compares the folders by their last edit date, last access date, creation date or file size. It has never been easier to join folders.
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    Downloads: 5 This Week
    Last Update:
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  • 21
    This project aims at providing an API in .NET to gather directory/files information of an NTFS volume very efficiently. (in contrast to the classic approach like FindFirst/FindNext which is really slow on large directories.)
    Downloads: 2 This Week
    Last Update:
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  • 22
    Cookie DestructoR helps you to maintain your privacy on the web. This software has the ability to clean cookies and internet cache on the fly. It is ready to destroy the Index.dat database file on your machine, if necessary.
    Downloads: 1 This Week
    Last Update:
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  • 23
    Rename multiple files based on date time
    Downloads: 1 This Week
    Last Update:
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  • 24
    This program lists all files and folders inside given path and stores in HTML file. Generated HTML uses external java-script and CSS to render it as treeview. Background threading ensures stability while XML gives flexibility to this program.
    Downloads: 1 This Week
    Last Update:
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  • 25
    Refundant

    Refundant

    Redundant files remover

    GUI is little broken - the list of duplicates is not relayeble, but this bug not affected main functionality.
    Downloads: 1 This Week
    Last Update:
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