1.toon-format / toon
🎒 Token-Oriented Object Notation (TOON) – compact, human-readable serialization of JSON data for LLM prompts. TypeScript SDK, CLI, benchmarks.
+1,765 stars
from 23,824 · score 7.48
Trending repositories
Ranked by Attention Score: stars gained over the last 180 complete days
54 repositories by Attention Score · May 7, 2026 – Nov 2, 2026 (UTC)
2.protocolbuffers / protobuf
Protocol Buffers - Google's data interchange format
+1,314 stars
from 70,831 · score 7.18
3.google / flatbuffers
FlatBuffers: Memory Efficient Serialization Library
+849 stars
from 25,752 · score 6.75
4.stephenberry / glaze
Extremely fast, in memory, serialization, reflection, and RPC library for C++. JSON, BEVE, BSON, CBOR, CSV, JSONB, MessagePack, TOML, YAML, EETF
+381 stars
from 2,714 · score 5.95
5.apache / fory
A blazingly fast multi-language serialization framework for idiomatic domain objects, schema IDL, and cross-language data exchange.
+291 stars
from 4,286 · score 5.68
6.ijl / orjson
Fast, correct Python JSON library supporting dataclasses, datetimes, and numpy
+287 stars
from 7,996 · score 5.66
7.Neargye / magic_enum
Static reflection for enums (to string, from string, iteration) for modern C++, work with any enum type without any macro or boilerplate code
+234 stars
from 6,015 · score 5.46
8.ibireme / yyjson
The fastest JSON library in C
+223 stars
from 3,707 · score 5.41
9.MessagePack-CSharp / MessagePack-CSharp
Extremely Fast MessagePack Serializer for C#(.NET, .NET Core, Unity, Xamarin). / msgpack.org[C#]
+187 stars
from 6,624 · score 5.24
10.USCiLab / cereal
A C++11 library for serialization
+71 stars
from 4,641 · score 4.28
11.aaubry / YamlDotNet
YamlDotNet is a .NET library for YAML
+71 stars
from 2,803 · score 4.28
12.Neargye / nameof
Nameof operator for modern C++, simply obtain the name of a variable, type, function, macro, and enum
+70 stars
from 2,297 · score 4.26
13.EsotericSoftware / kryo
Java binary serialization and cloning: fast, efficient, automatic
+65 stars
from 6,483 · score 4.19
14.fxamacker / cbor
CBOR codec (RFC 8949, RFC 8742) with CBOR tags, Go struct tag options (toarray, keyasint, omitempty, omitzero), float64/32/16, big.Int, and fuzz tested.
+65 stars
from 1,037 · score 4.19
15.inikulin / parse5
HTML parsing/serialization toolset for Node.js. WHATWG HTML Living Standard (aka HTML5)-compliant.
+64 stars
from 3,876 · score 4.17
16.felixguendling / cista
Cista is a simple, high-performance, zero-copy C++ serialization & reflection library.
+56 stars
from 2,200 · score 4.04
17.eyalz800 / zpp_bits
A lightweight C++20 serialization and RPC library
+55 stars
from 958 · score 4.03
18.pallets / itsdangerous
Safely pass trusted data to untrusted environments and back.
+48 stars
from 3,093 · score 3.89
19.marshmallow-code / marshmallow
A lightweight library for converting complex objects to and from simple Python datatypes.
+44 stars
from 7,201 · score 3.81
20.rttrorg / rttr
C++ Reflection Library
+43 stars
from 3,445 · score 3.78
21.biojppm / rapidyaml
Rapid YAML - a library to parse and emit YAML, and do it fast.
+42 stars
from 720 · score 3.76
22.alibaba / fastjsonArchived
FASTJSON 2.0.x has been released, faster and more secure, recommend you upgrade.
+40 stars
from 25,522 · score 3.71
23.zfoo-project / zfoo
💡Extremely fast enterprise server framework, can be used in RPC, game server, web server.
+39 stars
from 1,974 · score 3.69
24.ZXShady / enchantum
Faster enum reflection for C++17 since I don't want to wait for C++26 reflection.
+39 stars
from 125 · score 3.69
25.fraillt / bitsery
Your binary serialization library
+36 stars
from 1,233 · score 3.61
26.json-iterator / goArchived
A high-performance 100% compatible drop-in replacement of "encoding/json"
+29 stars
from 13,825 · score 3.40
27.qicosmos / iguana
universal serialization engine
+28 stars
from 1,301 · score 3.37
28.marcuswestin / store.js
Cross-browser storage for all use cases, used across the web.
+27 stars
from 13,946 · score 3.33
29.niXman / yas
Yet Another Serialization
+24 stars
from 774 · score 3.22
30.FirelyTeam / firely-net-sdk
The official Firely .NET SDK for HL7 FHIR
+22 stars
from 918 · score 3.14
31.mildsunrise / protobuf-inspector
🕵️ Tool to reverse-engineer Protocol Buffers with unknown definition
+16 stars
from 1,115 · score 2.83
32.chronoxor / FastBinaryEncoding
Fast Binary Encoding is ultra fast and universal serialization solution for C++, C#, Go, Java, JavaScript, Kotlin, Python, Ruby, Swift
+15 stars
from 948 · score 2.77
33.Zulu-Inuoe / jzon
A correct and safe(er) JSON RFC 8259 reader/writer with sane defaults.
+13 stars
from 190 · score 2.64
34.jorgen / json_struct
json_struct is a single header only C++ library for parsing JSON directly to C++ structs and vice versa
+12 stars
from 463 · score 2.56
35.qsbase / qs
Quick serialization of R objects
+10 stars
from 436 · score 2.40
36.MistEO / meojson
✨ Next-gen C++ JSON Serialization Engine | Zero Dependency | Header-Only | Unleash JSON Potential
+9 stars
from 152 · score 2.30
37.nihilai-collective / Jsonifier
A few classes for extremely fast json parsing/serializing in modern C++. Possibly the fastest json parser in C++. Possibly the fastest json serializer in C++.
+9 stars
from 94 · score 2.30
38.mus-format / mus-go
MUS format serializer for Go
+8 stars
from 137 · score 2.20
39.cg-tuwien / Auto-Vk-Toolkit
Getting serious about Vulkan development with this modern C++ framework, battle-tested in rapid prototyping, research, and teaching. Includes support for real-time ray tracing (RTX), serialization, and meshlets.
+7 stars
from 441 · score 2.08
40.jamescourtney / FlatSharp
Fast, idiomatic C# implementation of Flatbuffers
+6 stars
from 567 · score 1.95
41.EmberEmu / Hexi
Header-only, lightweight C++ library for binary streaming & serialization. Network data handling made easy peasy!
+5 stars
from 284 · score 1.79
42.plokhotnyuk / jsoniter-scala
Scala macros for compile-time generation of safe and ultra-fast JSON codecs + circe booster
+4 stars
from 814 · score 1.61
43.jimmiebergmann / mini-yaml
Single header YAML 1.0 C++11 serializer/deserializer.
+4 stars
from 241 · score 1.61
44.RuedigerMoeller / fast-serialization
FST: fast java serialization drop in-replacement
+3 stars
from 1,590 · score 1.39
45.pascaldekloe / colfer
binary serialization format
+3 stars
from 757 · score 1.39
46.permazen / permazen
Language-Natural Persistence Layer for Java
+3 stars
from 421 · score 1.39
47.PragmaTwice / protopuf
Protocol Puffers: A little, highly templated, and protobuf-compatible serialization/deserialization header-only library written in C++20
+3 stars
from 206 · score 1.39
48.PavelKisliak / BitSerializer
Multi-format serialization library for C++17: JSON/JSONC, CSV and MsgPack (dependency-free), plus XML and YAML
+3 stars
from 31 · score 1.39
49.akkadotnet / Hyperion
Polymorphic serialization for .NET
+2 stars
from 280 · score 1.10
50.hprose / hprose-delphi
Hprose is a cross-language RPC. This project is Hprose 2.0 for Delphi and FreePascal
+2 stars
from 123 · score 1.10
51.arturbac / simple_enum
An Fast, Intuitive and Type-Safe C++ Enumeration Support Library
+2 stars
from 41 · score 1.10
52.compactr / compactr.js
OpenAPI based binary serialization
+1 stars
from 107 · score 0.69
53.chocolacula / easy_reflection_cppArchived
Reflection and serialization library. Supports json, yaml, and binary. Uses libClang AST for code generation.
+1 stars
from 103 · score 0.69
54.fisxoj / sanity-clause
A data serialization/contract library for common lisp
+1 stars
from 52 · score 0.69