1.toon-format / toon
🎒 Token-Oriented Object Notation (TOON) – compact, human-readable serialization of JSON data for LLM prompts. TypeScript SDK, CLI, benchmarks.
- data-format
- llm
- serialization
- tokenization
+194 stars
from 25,416 · score 5.27
Trending repositories
Ranked by Attention Score: stars gained over the last 30 complete days
97 repositories by Attention Score · Oct 6, 2026 – Nov 4, 2026 (UTC)
+176 stars
from 50,663 · score 5.18
+57 stars
from 13,008 · score 4.06
4.stephenberry / glaze
Extremely fast, in memory, serialization, reflection, and RPC library for C++. JSON, BEVE, BSON, CBOR, CSV, JSONB, MessagePack, TOML, YAML, EETF
- api
- binary
- cplusplus
- cpp
- interface
- json
- +14 more
+51 stars
from 3,047 · score 3.95
5.ibireme / yyjson
The fastest JSON library in C
- json
- c
- portable
- serialization
- deserialization
- cross-platform
- +3 more
+47 stars
from 3,892 · score 3.87
+25 stars
from 6,125 · score 3.26
7.bblanchon / ArduinoJson
📟 JSON library for Arduino and embedded C++. Simple and efficient.
- arduino
- c-plus-plus
- iot
- embedded
- arduino-library
- json
- +2 more
+23 stars
from 7,219 · score 3.18
8.munich-data-engineering / reflect-cpp
A C++20 library for fast serialization, deserialization and validation using reflection. Supports JSON, Avro, Boost Serialization, BSON, Cap'n Proto, CBOR, Cereal, Command line interfaces, CSV, Environment variables, flexbuffers, msgpack, parquet, TOML, UBJSON, XML, YAML, yas / msgpack.org[C++20]
+21 stars
from 1,948 · score 3.09
9.marzer / tomlplusplus
Header-only TOML config file parser and serializer for C++17.
- toml
- cplusplus-17
- cplusplus-20
- header-only
- configuration-files
- cpp
- +14 more
+20 stars
from 2,160 · score 3.04
+18 stars
from 2,952 · score 2.94
+16 stars
from 5,012 · score 2.83
12.zserge / jsmn
Jsmn is a world fastest JSON parser/tokenizer. This is the official repo replacing the old one at Bitbucket
- json-data
- json-string
- parsing
+15 stars
from 4,195 · score 2.77
+13 stars
from 15,546 · score 2.64
14.mholt / PapaParse
Fast and powerful CSV (delimited text) parser that gracefully handles large files and malformed input
- csv
- javascript
- csv-parser
+13 stars
from 13,578 · score 2.64
15.JamesNK / Newtonsoft.Json
Json.NET is a popular high-performance JSON framework for .NET
- json
- c-sharp
+13 stars
from 11,305 · score 2.64
16.okuramasafumi / alba
Alba is a JSON serializer for Ruby, JRuby and TruffleRuby.
- json-serializer
- json-serialization
- ruby
- performance
- json
- presenter
- +1 more
+12 stars
from 1,203 · score 2.56
17.sindresorhus / query-string
Parse and stringify URL query strings
- query-string
- urlsearchparams
- url
- stringify
- parse
- npm-package
+11 stars
from 6,903 · score 2.48
+11 stars
from 2,863 · score 2.48
19.nschloe / meshio
:spider_web: input/output for many mesh formats
- vtk
- pypi
- python
- mesh
- mathematics
- engineering
- +1 more
+11 stars
from 2,330 · score 2.48
+9 stars
from 6,631 · score 2.30
21.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.
- cbor
- rfc-8949
- cose
- cwt
- go
- golang
- +7 more
+9 stars
from 1,093 · score 2.30
22.ToruNiina / toml11
TOML for Modern C++
- toml
- c-plus-plus-11
- c-plus-plus
- parser
- serializer
- c-plus-plus-14
- +4 more
+8 stars
from 1,302 · score 2.20
23.jstedfast / MimeKit
A .NET MIME creation and parser library with support for S/MIME, PGP, DKIM, TNEF and Unix mbox spools.
+7 stars
from 2,003 · score 2.08
24.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
+7 stars
from 1,475 · score 2.08
+7 stars
from 1,469 · score 2.08
26.jpsim / Yams
A Sweet and Swifty YAML parser.
+7 stars
from 1,266 · score 2.08
27.vincentlaucsb / csv-parser
A modern C++ CSV parser and serializer that doesn't make you choose between ease of use or performance.
- csv
- parser
- json
- tab-separated
- csv-parser
- statistics
- +5 more
+7 stars
from 1,130 · score 2.08
28.eyalz800 / zpp_bits
A lightweight C++20 serialization and RPC library
- serialization
- cpp
- header-only
- rpc
- cpp20
+7 stars
from 1,008 · score 2.08
29.marshmallow-code / marshmallow
A lightweight library for converting complex objects to and from simple Python datatypes.
- serialization
- deserialization
- validation
- python
- marshalling
- serde
- +1 more
+6 stars
from 7,238 · score 1.95
30.nmdias / FeedKit
FeedKit is a Swift library for Reading and Generating RSS, Atom, and JSON feeds.
- rss
- atom
- swift
- rss-reader
- atom-feed-parser
- atom-reader
- +4 more
+6 stars
from 1,352 · score 1.95
+6 stars
from 1,162 · score 1.95
32.NaturalIntelligence / fast-xml-parser
Validate XML, Parse XML and Build XML rapidly without C/C++ based libraries and no callback.
- fast-xml-parser
- xml2json
- xml2js
- fast
- xml
- parser
- +11 more
+5 stars
from 3,135 · score 1.79
33.felixguendling / cista
Cista is a simple, high-performance, zero-copy C++ serialization & reflection library.
- serialization
- cpp
- cpp17
- reflection
- deserialization
- efficient
- +3 more
+5 stars
from 2,251 · score 1.79
34.JohnSundell / Codextended
Extensions giving Swift's Codable API type inference super powers 🦸♂️🦹♀️
- swift
- codable
- json-parsing
- type-inference
+5 stars
from 1,508 · score 1.79
+5 stars
from 1,076 · score 1.79
36.biojppm / rapidyaml
Rapid YAML - a library to parse and emit YAML, and do it fast.
- yaml
- json
- parser
- emitter
- serialization
- rapid
- +6 more
+5 stars
from 757 · score 1.79
37.jazzband / tablib
Python Module for Tabular Datasets in XLS, CSV, JSON, YAML, &c.
+4 stars
from 4,754 · score 1.61
38.inikulin / parse5
HTML parsing/serialization toolset for Node.js. WHATWG HTML Living Standard (aka HTML5)-compliant.
+4 stars
from 3,934 · score 1.61
+4 stars
from 3,224 · score 1.61
40.valyala / fastjson
Fast JSON parser and validator for Go. No custom structs, no code generation, no reflection
- json-parser
- fast
- golang
- go
- json
- json-validation
+4 stars
from 2,461 · score 1.61
+4 stars
from 2,195 · score 1.61
42.dakrone / cheshire
Clojure JSON and JSON SMILE (binary json format) encoding/decoding
+4 stars
from 1,557 · score 1.61
43.brofield / simpleini
Cross-platform C++ library providing a simple API to read and write INI-style configuration files
+4 stars
from 1,323 · score 1.61
44.nmwsharp / happly
A C++ header-only parser for the PLY file format. Parse .ply happily!
+4 stars
from 407 · score 1.61
45.CuyZ / Valinor
Dependency free PHP library that helps to map any input into a strongly-typed structure.
+3 stars
from 1,530 · score 1.39
+3 stars
from 1,266 · score 1.39
47.jszwec / csvutil
csvutil provides fast and idiomatic mapping between CSV and Go (golang) values.
- golang
- csv
- fast
- csv-parser
- go
- csvutil
- +6 more
+3 stars
from 1,034 · score 1.39
48.chronoxor / FastBinaryEncoding
Fast Binary Encoding is ultra fast and universal serialization solution for C++, C#, Go, Java, JavaScript, Kotlin, Python, Ruby, Swift
- performance
- serialization
- binary
- protocol
- low-latency
- cpp
- +9 more
+3 stars
from 960 · score 1.39
49.go-playground / form
:steam_locomotive: Decodes url.Values into Go value(s) and Encodes Go value(s) into url.Values. Dual Array and Full map support.
- decoding
- encoder
- form
- parser
- form-data
+3 stars
from 929 · score 1.39
+3 stars
from 680 · score 1.39
51.metayeti / mINI
INI file reader and writer
- ini-file
- ini-reader
- ini-writer
- ini-parser
- ini-config
- ini
- +1 more
+3 stars
from 658 · score 1.39
52.emersion / go-message
✉️ A streaming Go library for the Internet Message Format and mail messages
- mime
+3 stars
from 457 · score 1.39
53.spyzhov / ajson
Abstract JSON for Golang with JSONPath support
- golang
- golang-package
- json
- json-parser
- jsonpath
+3 stars
from 292 · score 1.39
54.ffrostfall / ByteNet
An advanced, modern networking library for Luau/Roblox
- buffer
- luau
- netcode
- networking
- roblox
+3 stars
from 181 · score 1.39
55.martinblech / xmltodict
Python module that makes working with XML feel like you are working with JSON
+2 stars
from 5,757 · score 1.10
56.mafintosh / csv-parser
Streaming csv parser inspired by binary-csv that aims to be faster than everyone else
+2 stars
from 1,502 · score 1.10
+2 stars
from 1,466 · score 1.10
58.cezheng / Fuzi
A fast & lightweight XML & HTML parser in Swift with XPath & CSS support
- xml
- xml-parsing
- xml-parser
- xpath
- html
- html-parsing
- +6 more
+2 stars
from 1,102 · score 1.10
+2 stars
from 998 · score 1.10
+2 stars
from 954 · score 1.10
61.viniciussanchez / dataset-serialize
JSON to DataSet and DataSet to JSON converter for Delphi and Lazarus (FPC)
- delphi
- dataset
- json
- converter
- serialize
- dataset-serialize
- +10 more
+2 stars
from 744 · score 1.10
62.tplgy / cppcodec
Header-only C++11 library to encode/decode base64, base64url, base32, base32hex and hex (a.k.a. base16) as specified in RFC 4648, plus Crockford's base32. MIT licensed with consistent, flexible API.
+2 stars
from 698 · score 1.10
63.osiegmar / FastCSV
Fast, lightweight, and RFC 4180 compliant CSV library for Java. Zero dependencies, ~90 KiB. Trusted by Apache NiFi, JUnit, and Neo4j.
- csv
- java
- csv-parser
- csv-reader
- zero-dependency
+2 stars
from 692 · score 1.10
64.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
+2 stars
from 688 · score 1.10
65.indice-co / EDI.Net
EDI Serializer/Deserializer. Supports EDIFact, X12 and TRADACOMS formats
- edi
- edifact
- x12
- serializer
- tradacoms
+2 stars
from 490 · score 1.10
66.reers / ReerCodable
Codable extensions using Swift Macro
- ananda
- codable
- mjextension
- yymodel
- bettercodable
- codablewrapper
- +12 more
+2 stars
from 419 · score 1.10
67.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
+2 stars
from 373 · score 1.10
+2 stars
from 357 · score 1.10
69.pantoniou / libfyaml
Fully feature complete YAML parser and emitter, supporting the latest YAML spec and passing the full YAML testsuite.
+2 stars
from 345 · score 1.10
70.callum-oakley / json5-rs
A Rust JSON5 serializer and deserializer which speaks Serde.
+2 stars
from 249 · score 1.10
71.SwiftyJSON / SwiftyJSON
The better way to deal with JSON data in Swift.
- swiftyjson
- json
- swift
- response
- request
- carthage
- +4 more
+1 stars
from 22,920 · score 0.69
72.thephpleague / csv
CSV data manipulation made easy in PHP
- php
- csv-document
- csv-converter
- csv-filter
- csv-query
- csv
+1 stars
from 3,479 · score 0.69
73.neuecc / ZeroFormatterArchived
Infinitely Fast Deserializer for .NET, .NET Core and Unity.
- c-sharp
- unity
- serializer
- binaryformat
+1 stars
from 2,423 · score 0.69
74.neuecc / Utf8JsonArchived
Definitely Fastest and Zero Allocation JSON Serializer for C#(NET, .NET Core, Unity, Xamarin).
+1 stars
from 2,379 · score 0.69
75.marksands / BetterCodable
Better Codable through Property Wrappers
- property-wrappers
- codable
- swift5-1
- swift-package-manager
+1 stars
from 1,802 · score 0.69
+1 stars
from 1,322 · score 0.69
77.CoreOffice / XMLCoder
Easy XML parsing using Codable protocols in Swift
- xml
- xml-parser
- swift
- swift4
- codable
- carthage
- +4 more
+1 stars
from 877 · score 0.69
+1 stars
from 728 · score 0.69
79.chadaustin / sajson
Lightweight, extremely high-performance JSON parser for C++11
+1 stars
from 573 · score 0.69
80.beatrichartz / csv
CSV Decoding and Encoding for Elixir
+1 stars
from 515 · score 0.69
81.mafintosh / tar-stream
tar-stream is a streaming tar parser and generator.
+1 stars
from 436 · score 0.69
82.Rookfighter / inifile-cpp
A header-only and easy to use Ini file parser for C++.
- ini-parser
- inifile
- cpp
- cpp-library
+1 stars
from 423 · score 0.69
+1 stars
from 413 · score 0.69
84.TinyCsvParser / TinyCsvParser
Easy to use, easy to extend and high-performance library for CSV parsing with .NET
- csv-parser
+1 stars
from 408 · score 0.69
85.ggicci / httpin
🍡 HTTP Input for Go - HTTP Request from/to Go Struct (Bi-directional Data Binding between Go Struct and http.Request)
- go-http
- go-http-middleware
- go-api
- go-rest-api
- http-request-params-reader
- go
- +2 more
+1 stars
from 389 · score 0.69
+1 stars
from 363 · score 0.69
87.leandromoh / RecordParser
Zero Allocation Writer/Reader Parser for .NET Core
- flatfile
- csv
- tsv
- delimited
- file
- dotnet-core
- +8 more
+1 stars
from 324 · score 0.69
88.ahamez / protox
A reasonably fast, easy to use and 100% conformant Elixir library for Google Protocol Buffers (aka protobuf)
- protobuf
- elixir
- protocol-buffers
- protobuf-message
- protobuf-runtime
- protoc
+1 stars
from 298 · score 0.69
89.mdlayher / ethernet
Package ethernet implements marshaling and unmarshaling of IEEE 802.3 Ethernet II frames and IEEE 802.1Q VLAN tags. MIT Licensed.
+1 stars
from 288 · score 0.69
+1 stars
from 214 · score 0.69
91.Zulu-Inuoe / jzon
A correct and safe(er) JSON RFC 8259 reader/writer with sane defaults.
+1 stars
from 202 · score 0.69
+1 stars
from 153 · score 0.69
93.rdf-elixir / rdf-ex
An implementation of RDF for Elixir
- rdf
- elixir
- linked-data
- semantic-web
- graph
- knowledge-graph
+1 stars
from 126 · score 0.69
94.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++.
- cpp
- json
- json-parsing
- json-parsing-library
- serialization
- simd-instructions
- +8 more
+1 stars
from 102 · score 0.69
95.gvx / Ser
A fast, robust, richly-featured table serialisation library for Lua
+1 stars
from 85 · score 0.69
+1 stars
from 63 · score 0.69
+1 stars
from 49 · score 0.69