Browse 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.

  • Auth0 for AI Agents now in GA Icon
    Auth0 for AI Agents now in GA

    Ready to implement AI with confidence (without sacrificing security)?

    Connect your AI agents to apps and data more securely, give users control over the actions AI agents can perform and the data they can access, and enable human confirmation for critical agent actions.
    Start building today
  • Automate contact and company data extraction Icon
    Automate contact and company data extraction

    Build lead generation pipelines that pull emails, phone numbers, and company details from directories, maps, social platforms. Full API access.

    Generate leads at scale without building or maintaining scrapers. Use 10,000+ ready-made tools that handle authentication, pagination, and anti-bot protection. Pull data from business directories, social profiles, and public sources, then export to your CRM or database via API. Schedule recurring extractions, enrich existing datasets, and integrate with your workflows.
    Explore Apify Store
  • 1
    Npgsql

    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.
    Downloads: 31 This Week
    Last Update:
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  • 2
    Arisen Studio

    Arisen Studio

    Browse, Download and Install Mods for PlayStation 3 & Xbox 360

    The elegant, powerful, and open-source mod manager. Arisen Studio allows you to easily browse through a regularly updated database of mods, game saves, homebrew, resources, themes, and much more for the PlayStation 3 and Xbox 360. All mods have been tested and verified in our library, which is populated by myself, a few friends, and awesome contributors. Arisen Studio can also be used as an FTP client to install and uninstall mods directly from your console. Without the need to search up old posts or use file managers - this will do everything for you.
    Downloads: 2 This Week
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  • 3
    MSSQL Compressed Backup compresses SQL Server 2000, 2005 and 2008 databases on the fly using bzip2, zip, or gzip compression. It saves the data in the standard SQL Server backup file format so that standard decompression and restoring tools can be us
    Downloads: 2 This Week
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  • 4
    Little Registry Cleaner
    Little Registry Cleaner is an open source program designed for Microsoft's Windows Registry. Its purpose is to remove obsolete or unwanted items that build up in the registry over time in order to improve the stability & performance of your computer
    Downloads: 2 This Week
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  • Yeastar: Business Phone System and Unified Communications Icon
    Yeastar: Business Phone System and Unified Communications

    Go beyond just a PBX with all communications integrated as one.

    User-friendly, optimized, and scalable, the Yeastar P-Series Phone System redefines business connectivity by bringing together calling, meetings, omnichannel messaging, and integrations in one simple platform—removing the limitations of distance, platforms, and systems.
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  • 5

    GameLauncher

    Frontend emulator launcher displaying box art image of associated ROMs

    A free front-end emulator displaying associated game box art image for each game. GameLauncher can be controlled using standard Xbox controller. ROM associated image files can be downloaded using following link: http://axter.com/GameLauncher/Images.zip
    Downloads: 6 This Week
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  • 6
    User contributed components that extends the functionality of NHibernate. More information in the wiki: http://www.nhforge.org/wikis/. Development List: http://groups.google.com/group/nhcdevs
    Downloads: 1 This Week
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  • 7
    myOleDbExpress
    Simple and lightweight database viewer and editor using OleDb/DbConnection written in C#, support for SQL,FireBird
    Downloads: 1 This Week
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  • 8
    MySQLDotNet is a 100% .Net compliant Data Provider for MySQL. It implements all required classes like Connection, Command, DataReader, and DataAdapter. Features include automatic type conversion to .Net data types, transactions, Unicode and Blob support.
    Downloads: 0 This Week
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  • 9
    a framework library with a template method interface and inheritable classes for an executable process design which produces an executable which is both a GUI and a console application. It provides multi-threading for work items of the provider process .
    Downloads: 0 This Week
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  • Desktop and Mobile Device Management Software Icon
    Desktop and Mobile Device Management Software

    It's a modern take on desktop management that can be scaled as per organizational needs.

    Desktop Central is a unified endpoint management (UEM) solution that helps in managing servers, laptops, desktops, smartphones, and tablets from a central location.
    Learn More
  • 10
    Management of users, tables and views for an oracle database behind active directory. Management of users, groups and computer for an Active Directory shema. Management of external users trough Active Directory for Oracle
    Downloads: 0 This Week
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  • 11
    Automated Server Monitor (ASM) has been designed to monitor 1..n servers for service availability. This includes checking any TCP/UDP service, many popular databases including Firebird, MySQL and SQL Server. ASM has been written using Delphi and C#.
    Downloads: 0 This Week
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  • 12
    Cross platform indexed file btree implementation in C#, java and Python: Commit/abort transactions, localized unicode string order, recovery of damaged files, and configurable memory footprint, hashing, prefixing, and object serialization.
    Downloads: 0 This Week
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  • 13
    Encode/Decode library to/from Basic Encoding Rules (BER) of ASN.1 written in Visual Basic .Net. Useful to implement any protocol that uses BER (LDAP, SNMP, etc.).
    Downloads: 0 This Week
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  • 14
    CDCollect is a CD/DVD catalog application for gnome. It's goal is to be able to catalog your entire CD/DVD collection allowing for searches of your CD/DVD files with a clean and simple interface.
    Downloads: 0 This Week
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  • 15
    CellAO Datalogging provides the raw data Databases / Scripts / and other Documentation for Emulating Anarchy Online or makeing bots and such.
    Downloads: 0 This Week
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  • 16
    Cloud Target is a front-end to the python scripts that google uses to create, run and upload projects to its App Server system. This .NET application is based on the OSX front-end provided by Google in the SDK.
    Downloads: 0 This Week
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  • 17
    DBLX

    DBLX

    DBLX3 Relational Database System

    DBLX 3.3 is available! DBLX is a multi-user, client-server relational database. DBLX uses standard SQL and has many types of clients, and client API's. DBLX has a REST server to allow direct access from web applications. The design goals of DBLX are to produce a very fast database which can be used with standard ANSI sql. DBLX source code is available in C# and Java. DBLX includes the server component, a command-line client, as well as client APIs. DBLX is well-documented so that you can just get the database, drop it on to your favorite system and start using it immediately. Go to the Discussion section to read the latest on DBLX!
    Downloads: 0 This Week
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  • 18
    DataLoggin provides the raw data Database for the Dawn of Light Server Emulation Project. (www.dolserver.com)
    Downloads: 0 This Week
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  • 19
    MMC snap-in to synchronize Active Directory and MySQL databases.
    Downloads: 0 This Week
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  • 20
    DB Web Admin Provides access to your databases through a web interface. It gives users visibility into their SQL Server database instances. DBWA shows users Currently running SQL Queries, Historic Queries, and Fragmented Indexes. DBWA also allows users to kill currently running queries or run their own SQL queries. DBWA is implemented in ASP.NET MVC using C#. Previous Versions supported Oracle(PL/SQL and JSP), MS SQLServer (ASP), and MySQL/ODBC (C#.NET) versions.
    Downloads: 0 This Week
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  • 21
    Allows you to quickly launch database utilities from the system-tray.
    Downloads: 0 This Week
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  • 22
    File Database Windows application designed to hash a directory and all subdirectories in a given path, so you can find exact duplicates anywhere within that path. Uses a SQL database, is coded in C# and includes a Web Interface for remote admin of dups.
    Downloads: 0 This Week
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  • 23
    A highly adaptable, configuration-driven search engine that uses a data source connector interface that allows for many different data sources to be accessed. Needs no recompilation. Ever.
    Downloads: 0 This Week
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  • 24
    EmGeeGen is a server-client information distribution system, tailored for use with the EmGee role playing system (though the theoretical platform should be useful for a variety of tasks).
    Downloads: 0 This Week
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  • 25
    A Windows multithreaded application written in C#.Net designed to provide automated discovery and processing of various forms of source data. Each feed can be processed according to a basic syntax. All input parameters are defined by XML.
    Downloads: 0 This Week
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