Browse free open source C# Libraries and projects below. Use the toggles on the left to filter open source C# Libraries 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
  • Grafana: The open and composable observability platform Icon
    Grafana: The open and composable observability platform

    Faster answers, predictable costs, and no lock-in built by the team helping to make observability accessible to anyone.

    Grafana is the open source analytics & monitoring solution for every database.
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  • 1
    Application Management
    Application Management makes your application life easier. Automatic do memory management, handle and log unhandled exceptions, profiling your functions, make your application single instance and also provide util functions to get system information.
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  • 2
    Async MySQL Connector .NET and .NET Core

    Async MySQL Connector .NET and .NET Core

    Async MySQL Connector for .NET and .NET Core

    This is an ADO.NET data provider for MySQL. It provides implementations of DbConnection, DbCommand, DbDataReader, DbTransaction, the classes needed to query and update databases from managed code. This library implements true asynchronous I/O for database operations, without blocking (or using Task.Run to run synchronous methods on a background thread). This greatly improves the throughput of a web server that performs database operations. This library outperforms MySQL Connector/NET (MySql.Data) on benchmarks. This library is MIT-licensed and may be freely distributed with commercial software. Commercial software that uses Connector/NET may have to purchase a commercial license from Oracle. Fixes dozens of open bugs in Oracle’s Connector/NET; passes all ADO.NET Specification Tests. First MySQL library to support .NET Core; uses the latest .NET features.
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  • 3
    Asynchronous data access layer for .NET.
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  • 4
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  • Solve Your Real-world Business Challenges From A Single Timesheet With Powerful Built In Integration Icon
    Solve Your Real-world Business Challenges From A Single Timesheet With Powerful Built In Integration

    Timecontrol Is Your Multipurpose Timesheet Software

    TimeControl is a multi-purpose timesheet system designed to serve both Finance and Project Management. TimeControl has been designed to serve many purposes simultaneously. TimeControl tracks time on a task-by-task, project-by-project basis. Yet, despite its project-based controls, it remains a financial timesheet with all the controls necessary to fulfill the stringent needs of payroll, human resources, billing and finance. TimeControl is available both for subscription in the cloud or for purchase for an on premise installation and includes both a browser interface and the free TimeControl Mobile App for iOS and Android devices.
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  • 5
    BenchmarkDotNet

    BenchmarkDotNet

    Powerful .NET library for benchmarking

    BenchmarkDotNet is a powerful .NET library designed for creating accurate and reproducible benchmarks. It handles complexities like warm-up, outlier removal, and statistical analysis, presenting results in a clean, customizable summary format. BenchmarkDotNet has tons of features that are essential in comprehensive performance investigations. Four aspects define the design of these features: simplicity, automation, reliability, and friendliness. A lot of hand-written benchmarks produce wrong numbers that lead to incorrect business decisions. BenchmarkDotNet protects you from most of the benchmarking pitfalls and allows you to achieve high measurement precision.
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  • 6
    .Net extension methods, attributes and tools to make you more productive. Write less code, write less bugs.
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  • 7
    BezierSignature
    A simple .NET signature box for handheld application. Usage of bezier curves makes the resulting signature look more like the pen and paper version.
    Downloads: 0 This Week
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  • 8
    A dynamic .NET library to operate on really big Integers. Supports all native c# Integer operators and some mathematical functions.
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  • 9
    BikiSoft contains the windows software and atmel firmware for the BikiRom Mega-board product line. The bikirom boards are used to re-tune 1990-2002 Nissan SR20 based ECUs and ER34 ECUs. The hardware is available seperately.
    Downloads: 0 This Week
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  • Sell and manage your activities and accommodation with an all-in-one reservation system Icon
    Sell and manage your activities and accommodation with an all-in-one reservation system

    Booking software for adventure and wellness travel

    Bookinglayer is an all-in-one reservation system built for complex booking scenarios involving accommodation and activities. They help retreats, resorts, and schools automate their booking process from start to finish. Bookinglayer’s solution allows you to start selling activities with your accommodation (80% of their clients' bookings include an activity). The software is highly customisable, allowing you to fully adapt your booking flow to your guest's decision-making process. Use their Customer Portal to ask for guest data post-booking, ensuring the booking process is as simple and quick as possible. Use the customer portal to sign waivers, schedule sessions, and collect outstanding balances, all of which are fully automated. Whether you have 5 cabanas or are a large multinational chain, Bookinglayer revolutionizes booking management, making it easier to collect and change bookings, sell and schedule activities, assign instructors, handle payments, and communicate with guests.
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  • 10
    THIS PROJECT HAS NOW MOVED TO GITHUB: https://github.com/arenhag/BizUnitCompare BizUnitCompare enables you to easily compare the actual result of your integrations with an expected result. It differs from the XPathValidationStep in that it allows you to define what to exclude rather than have to define everything to include.
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  • 11
    BlueCsv
    Blue Csv es una libreria para la lectura y escritura de archivos CSV para .NET y java. descargar dll o jar segun el caso. Es liviana, potente y bien documentada por lo tanto facil de implementar para cualquier otro lenguaje.
    Downloads: 0 This Week
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  • 12
    Box.NET API is an easy to use C#.NET library for interfacing with the box.net web api. Allowing you to upload & download files. Create folders and other box.net functionality.
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  • 13

    Braille Espresso For C#

    This is a library written for Braille translation.

    This library is designed to promote the importance of Braille while hiding learning concepts from developers. This is designed so that the developer only has to know that Braille is one more language without thinking of the rules or even knowing the system itself. The hope is to convince developers to apply Braille translation technology to web, GUI or any other application. Only a few lines of code are required.
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  • 14
    This is simply a set of classes used to deserialize Collada files(core, fx, phys, b-rep, and kinematics). Should be more useful than classes created by the xsd.exe tool.
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  • 15
    C# Algorithms

    C# Algorithms

    Plug-and-play class-library project of standard data structures

    A plug-and-play class-library project of standard Data Structures and Algorithms, written in C#. It contains 75+ Data Structures and Algorithms, designed as Object-Oriented isolated components. Even though this project started for educational purposes, the implemented Data Structures and Algorithms are standard, efficient, stable and tested. This is a C#.NET solution-project, and it contains three subprojects. Algorithms, a class library project which contains the Algorithms implementations. Data Structures, a class library project which contains the Data Structures implementations. Also, UnitTest, a unit-testing project for the Algorithms and Data Structures.
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  • 16
    This project has moved to GitHub: https://github.com/bbadjari/ccli Library written in C# for use with CLI (command-line interface) applications. Provides command-line argument parsing and help screen printing.
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  • 17
    A C# implementation of the Smart Space Access Protocol to access Smart-M3 (http://sourceforge.net/projects/smart-m3/). Hosted by the University of Bologna and under development within the ARTEMIS SOFIA project (http://www.sofia-project.eu/)
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  • 18

    CCM (C# Collections Mapper)

    The CCM is a mini ORM, working with the database and C# collections

    CCM is a solution for the data management layer in the combination of Sql Server with a C # application. In whole this is a strongly typed entity mapper projecting the application's business logics onto database tables using T-SQL stored procedures. CCM allows you to implement fairly complex data structures in your application, without bothering about difficult and tedious questions of data acquisition and conversion issue, allowing you to pay more attention to the develop of business logic and UI. There no need to worry about migrations, context, etc. At the same time, ORM completely relieves the developer from direct communicating with ADO - datasets, tables, rows, and other data aceess component, to track connections, commands or operate with adapters because ORM works at a higher level of data abstraction. At the same time you will be completely protected from memory leaks and free to create complexity application logic at the primary data level.
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  • 19
    C# Implementation of the Consumer Product Safety Recalls Database API. This application allows you to search the US. Recalls Database. The VS2010 source is separated into two projects. A dll / SDK is included to add this functionality in any .Net App
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  • 20
    CQL

    CQL

    an all new query language and a sequel to SQL

    The project was developed for C/C++ programmers who are not familiar with SQL syntax.
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  • 21
    CSChessControls contains chess controls for Windows Forms Application. Source code is open and free to use. Developed in C#.Avaliable controls are ; ChessBoard , CapturedPiecesControl, ChessTimer, FischerTimer
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  • 22
    CSharp MARC

    CSharp MARC

    Full featured editor for reading and manipulating MARC Records

    *** THIS PROJECT HAS MOVED TO GITHUB *** https://github.com/frozen-solid/CSharp_MARC/ ********************************************************** C# MARC: C# class structures for reading and manipulating Library of Congress MARC records using the MARC21 standard. Based upon the PHP Pear package File_MARC (http://pear.php.net/package/File_MARC) by Dan Scott. C# MARC Editor: A full featured SQLite based editor for quickly modifying MARC records and exporting them to MARC21 or MARCXML.
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  • 23
    CSharpWriter

    CSharpWriter

    A C# Control use to edit RTF can replace RichTextBox.

    CSharpWriter(short name CSWriter) is a new RTF style document process engine without RichTextBox control. it is more powerfull than RichTextBox.We holpe it can replace OpenOffice in .NET World.
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  • 24

    C_Sharp_Calculator

    RPN based calculator in C#.

    Currently, this is the first version of an RPN calculator made to be easy to implement for any C# project requiring parsing of text into calculable data. Using RPN (Reverse Polish Notation) to place strings in a specific format to allow fast processing for parsing and evaluating the string.
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  • 25

    Cairo#

    Mono.Cairo library updated to cairo version 1.12.

    Downloads: 0 This Week
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