Top 20 NuGet writer Packages

Support for Reactive Extensions overloads for various types in the LanguageExt functional framework
Parser combinators library based on Haskell Parsec. This is part of the LanguageExt functional framework and requires LanguageExt.Core
Core interfaces and utilities that support the DistributedLock.* family of packages
Helper library for the LanguageExt functional framework that facilitates interop between F# native types like Option, Map, List, etc to .NET and Language-Ext types.
BarcodeWriter is a helper class that can overlay scanable barcodes onto digital documents.
A port of the MuPDF Android library for Xamarin Android. With this library, you will be able to read, write, update PDF files as well as convert pages to images.
iXlsxWriter is a lightweight implementation that allows creates a xlsx document totally or partially
iPdfWriter is a lightweight implementation that allows modifying a pdf document totally or partially by replacing tags
EonaCatLogger is a logging library created for .NET Standard.
Writer / Reader for dotnet objects in and out of a redis database
Lightweight, extremely fast and memory efficient Excel output library for .NET and .NET Core applications. Build your Excel reports in fraction of seconds with no memory footprint thanks to skipping XML serialization and streaming data directly to the file.
Fixed Width Parser Writer for reading and writing flat data (files) with defined field position in line or file (relative height).
A simple TOML parser and writer inspired by SimpleJSON. Provides minimal and simple API for parsing and writing TOML files. Compliant with TOML 1.0.0 format spec.
C# Monad Library
Complement for System.Linq.Expressions, including a C# writer, useful custom Expression nodes and extension methods.
FSharp library which implements the functional control monads such State, Reader, Writer.
Reads and writes .NET assemblies and modules, Windows PDBs and Portable PDBs. For better *Windows PDB* writer support, you should add a reference to `Microsoft.DiaSymReader.Native` nuget package too, see the dnlib README for more info: https://github.com/0xd4d/dnlib#windows-pdbs . You don't need to...
A big-endian BinaryReader/Writer implementation for .NET.
SpanReader and SpanWriter which wraps a Span<byte> and provide a convenient functionality for reading and writing.
A Serilog sink that writes events to Azure WebJob Host's TraceWriter.