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
+36 stars
from 25,574 · score 3.61
Trending repositories
Ranked by Attention Score: stars gained over the last 7 complete days
56 repositories by Attention Score · Oct 29, 2026 – Nov 4, 2026 (UTC)
+26 stars
from 50,813 · score 3.30
3.ibireme / yyjson
The fastest JSON library in C
- json
- c
- portable
- serialization
- deserialization
- cross-platform
- +3 more
+12 stars
from 3,927 · score 2.56
4.sindresorhus / query-string
Parse and stringify URL query strings
- query-string
- urlsearchparams
- url
- stringify
- parse
- npm-package
+8 stars
from 6,906 · score 2.20
5.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
+8 stars
from 3,090 · score 2.20
+7 stars
from 2,963 · score 2.08
+6 stars
from 15,553 · score 1.95
+6 stars
from 13,059 · score 1.95
9.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]
+6 stars
from 1,963 · score 1.95
+5 stars
from 6,145 · score 1.79
11.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
+5 stars
from 4,205 · score 1.79
12.nschloe / meshio
:spider_web: input/output for many mesh formats
- vtk
- pypi
- python
- mesh
- mathematics
- engineering
- +1 more
+5 stars
from 2,336 · score 1.79
13.bblanchon / ArduinoJson
📟 JSON library for Arduino and embedded C++. Simple and efficient.
- arduino
- c-plus-plus
- iot
- embedded
- arduino-library
- json
- +2 more
+4 stars
from 7,238 · score 1.61
14.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
+3 stars
from 2,462 · score 1.39
15.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
+3 stars
from 2,177 · score 1.39
16.jpsim / Yams
A Sweet and Swifty YAML parser.
+3 stars
from 1,270 · score 1.39
+3 stars
from 1,078 · score 1.39
18.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
+2 stars
from 3,138 · score 1.10
+2 stars
from 2,872 · score 1.10
20.dakrone / cheshire
Clojure JSON and JSON SMILE (binary json format) encoding/decoding
+2 stars
from 1,559 · score 1.10
21.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
+2 stars
from 1,480 · score 1.10
22.brofield / simpleini
Cross-platform C++ library providing a simple API to read and write INI-style configuration files
+2 stars
from 1,325 · score 1.10
23.ToruNiina / toml11
TOML for Modern C++
- toml
- c-plus-plus-11
- c-plus-plus
- parser
- serializer
- c-plus-plus-14
- +4 more
+2 stars
from 1,308 · score 1.10
24.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
+2 stars
from 1,135 · score 1.10
25.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
+2 stars
from 1,100 · score 1.10
26.eyalz800 / zpp_bits
A lightweight C++20 serialization and RPC library
- serialization
- cpp
- header-only
- rpc
- cpp20
+2 stars
from 1,013 · score 1.10
27.metayeti / mINI
INI file reader and writer
- ini-file
- ini-reader
- ini-writer
- ini-parser
- ini-config
- ini
- +1 more
+2 stars
from 659 · score 1.10
28.nmwsharp / happly
A C++ header-only parser for the PLY file format. Parse .ply happily!
+2 stars
from 409 · score 1.10
29.JamesNK / Newtonsoft.Json
Json.NET is a popular high-performance JSON framework for .NET
- json
- c-sharp
+1 stars
from 11,317 · score 0.69
+1 stars
from 5,027 · score 0.69
31.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
32.neuecc / ZeroFormatterArchived
Infinitely Fast Deserializer for .NET, .NET Core and Unity.
- c-sharp
- unity
- serializer
- binaryformat
+1 stars
from 2,423 · score 0.69
33.neuecc / Utf8JsonArchived
Definitely Fastest and Zero Allocation JSON Serializer for C#(NET, .NET Core, Unity, Xamarin).
+1 stars
from 2,379 · score 0.69
34.JohnSundell / Codextended
Extensions giving Swift's Codable API type inference super powers 🦸♂️🦹♀️
- swift
- codable
- json-parsing
- type-inference
+1 stars
from 1,512 · score 0.69
35.mafintosh / csv-parser
Streaming csv parser inspired by binary-csv that aims to be faster than everyone else
+1 stars
from 1,503 · score 0.69
+1 stars
from 1,475 · score 0.69
+1 stars
from 1,467 · score 0.69
+1 stars
from 1,322 · score 0.69
+1 stars
from 1,268 · score 0.69
+1 stars
from 1,167 · score 0.69
41.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
+1 stars
from 1,103 · score 0.69
42.jszwec / csvutil
csvutil provides fast and idiomatic mapping between CSV and Go (golang) values.
- golang
- csv
- fast
- csv-parser
- go
- csvutil
- +6 more
+1 stars
from 1,036 · score 0.69
+1 stars
from 1,004 · score 0.69
+1 stars
from 999 · score 0.69
45.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
46.biojppm / rapidyaml
Rapid YAML - a library to parse and emit YAML, and do it fast.
- yaml
- json
- parser
- emitter
- serialization
- rapid
- +6 more
+1 stars
from 761 · score 0.69
47.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
+1 stars
from 693 · score 0.69
48.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
+1 stars
from 689 · score 0.69
49.mafintosh / tar-stream
tar-stream is a streaming tar parser and generator.
+1 stars
from 436 · score 0.69
+1 stars
from 413 · score 0.69
51.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
+1 stars
from 358 · score 0.69
53.pantoniou / libfyaml
Fully feature complete YAML parser and emitter, supporting the latest YAML spec and passing the full YAML testsuite.
+1 stars
from 346 · score 0.69
54.callum-oakley / json5-rs
A Rust JSON5 serializer and deserializer which speaks Serde.
+1 stars
from 250 · score 0.69
+1 stars
from 214 · score 0.69
56.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