1.MessagePack-CSharp / MessagePack-CSharp
Extremely Fast MessagePack Serializer for C#(.NET, .NET Core, Unity, Xamarin). / msgpack.org[C#]
+180 stars
from 6,629 · score 5.20
Trending repositories
Ranked by Attention Score: stars gained over the last 180 complete days
17 repositories by Attention Score · May 9, 2026 – Nov 4, 2026 (UTC)
2.JamesNK / Newtonsoft.Json
Json.NET is a popular high-performance JSON framework for .NET
- json
- c-sharp
+103 stars
from 11,215 · score 4.64
+70 stars
from 2,804 · score 4.26
+54 stars
from 5,162 · score 4.01
5.protobuf-net / protobuf-net
Protocol Buffers library for idiomatic .NET
+52 stars
from 4,924 · score 3.97
6.nietras / Sep
One of the World's Fastest .NET CSV Parsers. 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.
- csharp
- csv
- csv-parser
- csv-reader
- csv-writer
- dotnet
- +2 more
+47 stars
from 1,435 · score 3.87
7.jstedfast / MimeKit
A .NET MIME creation and parser library with support for S/MIME, PGP, DKIM, TNEF and Unix mbox spools.
+30 stars
from 1,980 · score 3.43
8.lofcz / FastCloner
The fastest deep cloning library for .NET – zero-config, works out of the box.
- deep-clone
- deep-copy
- deepclone
- deepcopy
- duplication
- cloner
- +11 more
+24 stars
from 351 · score 3.22
9.FirelyTeam / firely-net-sdk
The official Firely .NET SDK for HL7 FHIR
- fhir
- dotnet-core
- dotnet
- parsing
- serialization
- validation
- +8 more
+23 stars
from 918 · score 3.18
10.RehanSaeed / Schema.NET
Schema.org objects turned into strongly typed C# POCO classes for use in .NET. All classes can be serialized into JSON/JSON-LD and XML, typically used to represent structured data in the head section of html page.
- schema
- schema-org
- dotnet
- c-sharp
- dotnet-core
- poco
- +4 more
+9 stars
from 681 · score 2.30
11.neuecc / Utf8JsonArchived
Definitely Fastest and Zero Allocation JSON Serializer for C#(NET, .NET Core, Unity, Xamarin).
+7 stars
from 2,373 · score 2.08
12.neuecc / ZeroFormatterArchived
Infinitely Fast Deserializer for .NET, .NET Core and Unity.
- c-sharp
- unity
- serializer
- binaryformat
+6 stars
from 2,418 · score 1.95
13.jamescourtney / FlatSharp
Fast, idiomatic C# implementation of Flatbuffers
- serialization
- flatbuffers
- csharp
- deserialization
- serializer
- flatbuffer
- +4 more
+6 stars
from 567 · score 1.95
14.indice-co / EDI.Net
EDI Serializer/Deserializer. Supports EDIFact, X12 and TRADACOMS formats
- edi
- edifact
- x12
- serializer
- tradacoms
+6 stars
from 486 · score 1.95
15.thomasgalliker / ObjectDumper
ObjectDumper is a utility which aims to serialize C# objects to string for debugging and logging purposes.
+2 stars
from 424 · score 1.10
16.akkadotnet / Hyperion
Polymorphic serialization for .NET
- serialization
- hyperion
- serializer
- dotnet
- dotnet-core
+2 stars
from 280 · score 1.10
+2 stars
from 174 · score 1.10