Top 20 NuGet io Packages

Reliable, real-time file system monitoring with an intuitive API that developers everywhere love.
.NET library extending stream data reading and writing functionality.
A powerful image downloading and caching library for Android
An HTTP & HTTP/2 client for Android and Java applications
PCL Extension provides file system implementations for PCL, .NET Framework, .NET Core, Xamarin.iOS, Xamarin.Android and Xamarin.Mac. This makes it easier to create cross-platform .NET libraries and apps. Supports .NET Standard now. UWP support is temporarily removed.
==DEPRECATED== Source moved/split into several repositories/packages: https://www.nuget.org/packages/CSharpTest.Net.Collections/ https://www.nuget.org/packages/CSharpTest.Net.Commands/ https://www.nuget.org/packages/CSharpTest.Net.RpcLibrary/ https://www.nuget.org/packages/CSharpTest.Net.Tools/ ...
Provides additional input and output (I/O) types.
FSharp library which implements the functional IO monads, IO, stdio, Retry.
Provides support for I/O processing.
Set of IO related .NET utility classes.
NModbusAsync is a striped to the bone version of NModbus library. The only thing that left is Modbus over TCP and Modbus RTU over TPC masters. The main difference and advantage of NModbusAsync is that all operations now utilize only asynchronous I/O.
Telegraphy.Net adapter for file and directory operations
GPA Gemstone IO Library
PCL Extension provides file system implementations for PCL, .NET Framework, .NET Core, Xamarin.iOS, Xamarin.Android and Xamarin.Mac. This makes it easier to create cross-platform .NET libraries and apps. Supports .NET Standard now. UWP support is temporarily removed.
The async rolling file sink for Serilog
Smart byte mapper library optional converters
File system abstraction focusing on testability and high-level features.
Xamarin.Android binding for Square Okio, a modern I/O API for Java
A user mode file system for windows. This is a .NET wrapper over Dokan, and allows you to create your own file systems in Windows.
Providers additional requesters and IO helpers for AngleSharp.