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Top 16 C# net-framework Projects
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Sevalla
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FluentFTP
An FTP and FTPS client for .NET & .NET Standard, optimized for speed. Provides extensive FTP commands, File uploads/downloads, SSL/TLS connections, Automatic directory listing parsing, File hashing/checksums, File permissions/CHMOD, FTP proxies, FXP support, UTF-8 support, Async/await support, Powershell support and more. Written entirely in C#.
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InfluxDB
InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.
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NeuralNetwork.NET
A TensorFlow-inspired neural network library built from scratch in C# 7.3 for .NET Standard 2.0, with GPU support through cuDNN
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Standard-Toolkit
An update to Component factory's krypton toolkit to support .NET Framework 4.6.2 - 4.8.1 to .NET 8 - 9
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SpiceSharp
Spice# is a cross-platform electronic circuit simulator based on Berkeley Spice - the mother of commercial industry-standard circuit simulators.
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FileUltimate
FileUltimate is an ASP.NET File Manager and an ASP.NET File Uploader which supports ASP.NET Core 5.0+, ASP.NET Core 2.1+, ASP.NET MVC 3.0+ and ASP.NET WebForms 4.7.2+ web applications/web sites.
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DocumentUltimate
DocumentUltimate is an ASP.NET Document Viewer and a .NET Document Converter which supports ASP.NET Core 5.0+, ASP.NET Core 2.1+, ASP.NET MVC 3.0+ and ASP.NET WebForms 4.7.2+ web applications/web sites.
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ImageUltimate
ImageUltimate is an ASP.NET Image resizer and a .NET Image Processor which supports ASP.NET Core 5.0+, ASP.NET Core 2.1+, ASP.NET MVC 3.0+ and ASP.NET WebForms 4.7.2+ web applications/web sites.
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VideoUltimate
VideoUltimate is a .NET Video Reader and a .NET Video Thumbnailer which can read any video file format on the planet. It supports .NET 5.0+ or .NET Core 2.0+ and .NET Framework 4.7.2+ web/console/desktop applications.
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NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
C# net-framework discussion
C# net-framework related posts
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Is it possible to use method attributes to select which overload to run based on a configuration setting?
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Process Ids on C#
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A History of the FFmpeg Project
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Creating a service that runs other executables (Windows Server)
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Calling PowerShell Azure module and creating resource group from C#
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GUI for a command line program
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A 3 minute video on how to use PowerShell directly in C#
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A note from our sponsor - SaaSHub
www.saashub.com | 2 Sep 2025
Index
What are some of the best open-source net-framework projects in C#? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | ServiceStack | 5,469 |
| 2 | FluentFTP | 3,305 |
| 3 | WpfDesigner | 1,031 |
| 4 | MonoMod | 887 |
| 5 | InstagramApiSharp | 854 |
| 6 | RibbonWinForms | 818 |
| 7 | OpenGL.Net | 601 |
| 8 | NeuralNetwork.NET | 559 |
| 9 | Standard-Toolkit | 522 |
| 10 | SpiceSharp | 279 |
| 11 | FileUltimate | 76 |
| 12 | NStrip | 62 |
| 13 | DocumentUltimate | 29 |
| 14 | GenZ-Save-File-Editor | 13 |
| 15 | ImageUltimate | 5 |
| 16 | VideoUltimate | 4 |
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