1.nlohmann / json
JSON for Modern C++
+738 stars
from 50,091 · score 6.61
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2.simdjson / simdjson
Parsing gigabytes of JSON per second : used by Facebook/Meta Velox, the Node.js runtime, ClickHouse, WatermelonDB, Apache Doris, Milvus, StarRocks
+430 stars
from 24,064 · score 6.07
3.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
+8 stars
from 847 · score 2.20
4.APIDevTools / json-schema-ref-parser
Parse, Resolve, and Dereference JSON Schema $ref pointers in Node and browsers
+7 stars
from 1,106 · score 2.08
5.taocpp / json
C++ header-only JSON library
+7 stars
from 676 · score 2.08
6.sourcemeta / core
A comprehensive set of composable foundational C++ libraries and CMake utilities to power Sourcemeta projects. Note we don't provide any stable ABI/API guarantees to external users outside Sourcemeta
+5 stars
from 50 · score 1.79