1.nlohmann / json
JSON for Modern C++
+738 stars
from 50,091 · score 6.61
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Ranked by Attention Score: stars gained over the last 90 complete days
6 repositories by Attention Score · Aug 5, 2026 – Nov 2, 2026 (UTC)
2.okuramasafumi / alba
Alba is a JSON serializer for Ruby, JRuby and TruffleRuby.
+25 stars
from 1,190 · score 3.26
3.alibaba / fastjsonArchived
FASTJSON 2.0.x has been released, faster and more secure, recommend you upgrade.
+9 stars
from 25,553 · score 2.30
4.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
5.microsurging / surging
Surging is a micro-service engine that provides a lightweight, high-performance, modular RPC request pipeline. support Event-based Asynchronous Pattern and reactive programming.
+6 stars
from 3,257 · score 1.95
6.tgockel / json-voorhees
A killer modern C++ library for interacting with JSON.
+2 stars
from 129 · score 1.10