Serialization & Data Formats for .NET
JSON, binary, YAML, CSV, TOML and schema tooling.
- Projects
- 45
- Groups
- 4
- Combined stars
- 156.8K
JSON 12
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System.Text.Json MIT The built-in high-performance JSON stack of .NET, with source-generated serializers. ★ 18.4K ⤓ 6.6B -
Newtonsoft.Json MIT Json.NET is a popular high-performance JSON framework for .NET ★ 11.3K ⤓ 9.6B -
Utf8Json Archived MIT Definitely Fastest and Zero Allocation JSON Serializer for C#(NET, .NET Core, Unity, Xamarin). ★ 2.4K ⤓ 55.3M -
Jil Legacy MIT Fast .NET JSON (De)Serializer, Built On Sigil ★ 2.1K ⤓ 14M -
json-everything MIT System.Text.Json-based support for all of your JSON needs. ★ 1.3K ⤓ 58.3M -
ServiceStack.Text Archived .NET's fastest JSON, JSV and CSV Text Serializers ★ 1.2K ⤓ 89.1M -
JsonSubTypes MIT Discriminated Json Subtypes Converter implementation for .NET ★ 434 ⤓ 153.3M -
JsonDiffPatch.Net MIT JSON object diffs and reversible patching (jsondiffpatch compatible) ★ 418 ⤓ 30.7M -
Macross.Json.Extensions Inactive MIT Core repository contains the primary open source libraries released by Macross Software for .NET Core. ★ 127 ⤓ 29.6M -
SystemTextJson.JsonDiffPatch Inactive MIT High-performance, low-allocating JSON object diff and patch extension for System.Text.Json. Support generating patch document in RFC 6902 JSON Patch format. ★ 126 ⤓ 3.4M -
SystemTextJsonPatch MIT SystemTextJsonPatch is a JSON Patch (JsonPatchDocument) RFC 6902 implementation for .NET using System.Text.Json ★ 124 ⤓ 15.5M -
JsonFlatten MIT Extension methods to flatten or unflatten a JSON.NET JObject to or from an IDictionary<string, object>. ★ 53 ⤓ 6.9M
Binary 13
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Google.Protobuf Protocol Buffers - Google's data interchange format ★ 72.1K ⤓ 1.5B -
MessagePack for C# Extremely Fast MessagePack Serializer for C#(.NET, .NET Core, Unity, Xamarin). / msgpack.org[C#] ★ 6.8K ⤓ 352.2M -
protobuf-net Protocol Buffers library for idiomatic .NET ★ 5K ⤓ 283.5M -
MemoryPack MIT Zero encoding extreme performance binary serializer for C# and Unity. ★ 4.8K ⤓ 14.6M -
Apache Avro Apache-2.0 Apache Avro is a data serialization system. ★ 3.3K ⤓ 72.3M -
Bond Archived MIT Bond was a cross-platform framework for working with schematized data. The open-source project ended on March 31, 2025. ★ 2.6K -
ZeroFormatter Archived MIT Infinitely Fast Deserializer for .NET, .NET Core and Unity. ★ 2.4K ⤓ 2M -
Parquet.Net MIT Fully managed Apache Parquet implementation ★ 911 ⤓ 33.9M -
MsgPack.Cli Legacy Apache-2.0 MessagePack implementation for Common Language Infrastructure / msgpack.org[C#] ★ 859 ⤓ 29.9M
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FlatSharp Apache-2.0 Fast, idiomatic C# implementation of Flatbuffers ★ 573 ⤓ 760K -
BinarySerializer MIT A declarative serialization framework for controlling formatting of data at the byte and bit level using field bindings, converters, and code. ★ 313 ⤓ 1.2M -
Hyperion Legacy Apache-2.0 Polymorphic serialization for .NET ★ 282 ⤓ 4.8M -
PeterO.Cbor Unlicense A C# implementation of Concise Binary Object Representation (RFC 8949). ★ 232 ⤓ 12.5M
YAML, CSV, TOML & text 16
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CsvHelper Library to help reading and writing CSV files ★ 5.2K ⤓ 720.5M -
YamlDotNet MIT YamlDotNet is a .NET library for YAML ★ 2.9K ⤓ 601.7M -
Microsoft.IO.RecyclableMemoryStream MIT A library to provide pooling for .NET MemoryStream objects to improve application performance. ★ 2.2K ⤓ 461.8M -
Sep MIT World's Fastest .NET CSV Parser. Modern, minimal, fast, zero allocation, reading and writing of separated values (`csv`, `tsv` etc.). Cross-platform, trimmable and AOT/NativeAOT compatible with blazing fast SIMD vectorized parsing. ★ 1.5K ⤓ 14.5M -
FileHelpers Inactive MIT The FileHelpers are a free and easy to use .NET library to read/write data from fixed length or delimited records in files, strings or streams ★ 1.2K ⤓ 25.6M -
Tomlyn BSD-2-Clause Tomlyn is a TOML parser, validator and authoring library for .NET Framework and .NET Core ★ 600 ⤓ 6.7M -
EDI.Net MIT EDI Serializer/Deserializer. Supports EDIFact, X12 and TRADACOMS formats ★ 492 ⤓ 1.9M -
Sylvan.Data.Csv MIT A collection of .NET libraries. ★ 456 ⤓ 4.7M -
SharpYaml SharpYaml is a high-performance .NET YAML parser, emitter, and object serializer - NativeAOT ready. ★ 419 ⤓ 80.2M -
TinyCsvParser MIT Easy to use, easy to extend and high-performance library for CSV parsing with .NET ★ 408 ⤓ 9.2M -
UTF.Unknown Character set detector - .NET standard & .NET ★ 389 ⤓ 11.4M -
ExtendedXmlSerializer MIT A configurable and eXtensible Xml serializer for .NET. ★ 346 ⤓ 2.1M -
RecordParser MIT Zero Allocation Writer/Reader Parser for .NET Core ★ 325 ⤓ 166.1K -
Nett Archived MIT .Net library for TOML ★ 225 ⤓ 8.4M -
YAXLib MIT Yet Another XML Serialization Library for the .NET Framework and .NET Core ★ 173 ⤓ 1.4M -
ExcelNumberFormat Inactive MIT Parse and render Excel number format strings ★ 90 ⤓ 220.6M
Compression 4
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K4os.Compression.LZ4 MIT LZ4/LH4HC compression for .NET Standard 1.6/2.0 (formerly known as lz4net) ★ 815 ⤓ 156.3M -
DotNetZip (Semverd) Archived Please use System.IO.Compression! A fork of the DotNetZip project without signing with a solution that compiles cleanly. This project aims to follow semver to avoid versioning conflicts. DotNetZip is a FAST, FREE class library and toolset for manipulating zip files. Use VB, C# or any .NET language to easily create, extract, or update zip files. ★ 545 ⤓ 76M -
ZstdSharp MIT Port of zstd compression library to c# ★ 392 ⤓ 289.5M -
BrotliSharpLib Inactive MIT Full C# port of Brotli compression algorithm ★ 98 ⤓ 8.9M