1.protocolbuffers / protobuf
Protocol Buffers - Google's data interchange format
- protobuf
- protocol-buffers
- protocol-compiler
- protobuf-runtime
- protoc
- serialization
- +2 more
+107 stars
from 72,043 · score 4.68
Trending repositories
Ranked by Attention Score: stars gained over the last 30 complete days
32 repositories by Attention Score · Oct 6, 2026 – Nov 4, 2026 (UTC)
2.capnproto / capnproto
Cap'n Proto serialization/RPC system - core tools and C++ library
+38 stars
from 13,204 · score 3.66
3.Tencent / rapidjson
A fast JSON parser/generator for C++ with both SAX/DOM style API
+26 stars
from 15,127 · score 3.30
4.MessagePack-CSharp / MessagePack-CSharp
Extremely Fast MessagePack Serializer for C#(.NET, .NET Core, Unity, Xamarin). / msgpack.org[C#]
+25 stars
from 6,784 · score 3.26
5.benhoyt / inih
Simple .INI file parser in C, good for embedded systems
- ini
- parser
- configparser
- embedded-systems
- c
+23 stars
from 3,042 · score 3.18
6.open-source-parsers / jsoncpp
A C++ library for interacting with JSON.
+18 stars
from 8,891 · score 2.94
+15 stars
from 1,987 · score 2.77
8.json-c / json-c
https://github.com/json-c/json-c is the official code repository for json-c. See the wiki for release tarballs for download. API docs at http://json-c.github.io/json-c/
- json
- c
- hacktoberfest
+11 stars
from 3,293 · score 2.48
9.protobufjs / protobuf.js
High-performance Protocol Buffers for JavaScript and TypeScript. Conformant through Edition 2026, and unusually versatile. No protoc required.
- javascript
- typescript
- protobuf
- protocol-buffers
+9 stars
from 10,595 · score 2.30
+9 stars
from 5,207 · score 2.30
11.stleary / JSON-java
A reference implementation of a JSON package in Java.
- hacktoberfest
- java
- json
- public-domain
+9 stars
from 4,716 · score 2.30
+9 stars
from 2,997 · score 2.30
+7 stars
from 3,367 · score 2.08
14.protobuf-net / protobuf-net
Protocol Buffers library for idiomatic .NET
+6 stars
from 4,970 · score 1.95
+6 stars
from 990 · score 1.95
16.FirelyTeam / firely-net-sdk
The official Firely .NET SDK for HL7 FHIR
- fhir
- dotnet-core
- dotnet
- parsing
- serialization
- validation
- +8 more
+5 stars
from 936 · score 1.79
+5 stars
from 453 · score 1.79
18.msgpack / msgpack-c
MessagePack implementation for C and C++ / msgpack.org[C/C++]
+4 stars
from 3,351 · score 1.61
19.Masterminds / html5-php
An HTML5 parser and serializer for PHP.
- xml-namespaces
- php
- html5-parser
- dom
- domdocument
- html5-php
- +2 more
+3 stars
from 1,785 · score 1.39
20.ultrajson / ultrajson
Ultra fast JSON decoder and encoder written in C with Python bindings
- python
- c
- ultrajson
- json
- decoder
- encoder
- +1 more
+2 stars
from 4,498 · score 1.10
21.danielaparker / jsoncons
A C++, header-only library for constructing JSON and JSON-like data formats, with JSON Pointer, JSON Patch, JSON Schema, JSONPath, JMESPath, CSV, MessagePack, CBOR, BSON, UBJSON, toon-format
- json
- cbor
- jsonpath
- csv
- json-pointer
- json-patch
- +14 more
+2 stars
from 854 · score 1.10
+2 stars
from 618 · score 1.10
+1 stars
from 11,235 · score 0.69
24.jimhigson / oboe.js
A streaming approach to JSON. Oboe.js speeds up web applications by providing parsed objects before the response completes.
+1 stars
from 4,815 · score 0.69
+1 stars
from 1,679 · score 0.69
26.tidyverse / readr
Read flat files (csv, tsv, fwf) into R
+1 stars
from 1,040 · score 0.69
+1 stars
from 796 · score 0.69
28.cesanta / frozen
JSON parser and generator for C/C++ with scanf/printf like interface. Targeting embedded systems.
+1 stars
from 775 · score 0.69
29.jorgen / json_struct
json_struct is a single header only C++ library for parsing JSON directly to C++ structs and vice versa
- c-plus-plus
- json
- template-specialisations
- parse
- template-metaprogramming
- deserialization
- +1 more
+1 stars
from 473 · score 0.69
30.jeroen / jsonlite
Simple JSON Parser and Generator for R
+1 stars
from 403 · score 0.69
+1 stars
from 241 · score 0.69
32.dlang-community / SDLang-D
An SDLang (Simple Declarative Language) library for D
+1 stars
from 126 · score 0.69