Top 20 NuGet utf8 Packages

Unicode to ASCII transliteration
A c# netstandard utility for simple crypt/decrypt text. The code is written in .NET C#.
Legacy implementation of UTF8 string encode/decode and windows-1252 codepage support for .Net Core 3.0+
Really effective encoding utilities that use stream encoding/decoding like they are supposed to.
A Unicode and emoji text-processing library for .NET, supporting UTF-8, UTF-16, and UTF-32 on .NET 2.0+ and .NET Standard (Core/UWP), with emoji support! ๐Ÿ”ฅ๐ŸŒถ๏ธ๐Ÿ˜๐ŸŽ‰
S22.Imap fork. Fixed national character encoding.
Efficient parsing, formatting, and encoding APIs
Utf8 binding library for Bridge.NET projects.
Easy coding of Xml. This NuGet package adds Xml features, such as Pretty, Linearize, serialize, deserialize, etc.
.NET class library that for handling unicode string.
UTF8 Utility. Decode, encode, search, compare, and getting hashcode are directly on ArraySegment<byte>. There is no string allocation.
EncodingConverter.Core is a C# wrapper for EncodingConverter C library. Text files can be easily converted between UTF-8, UTF-16, UTF-32, ISO8859-1, ISO8859-9.
Stack only json deserialization using generators and System.Text.Json library
Text files Unicode Charset Detector With and Without BOM.
Tool to strip rogue UTF8 BOM from text files.
Replace bytes in a UTF8 byte stream.
Decode a UTF8 base64 encoded string. Supports both base64 and base64url.
base64 encode/decode for URL applications. dotnet global tool of Base64UrlCore.
base64 encode/decode for URL applications.
A Unicode and emoji text-processing library for .NET, supporting UTF-8, UTF-16, and UTF-32 on .NET Standard