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High-Performance JSON Libraries

Libraries designed for efficient, high-speed JSON serialization and deserialization using techniques such as SIMD and JIT to maximize performance.

The Linux Foundation

by The Linux Foundation

22 projects ・ Updated 14 Mar 2025

Project
Contributors
Organizations
Software value
Fastify
7,630
1,784
$11M
Fastjson
4,582
405
$7.4M
JSON for Modern C++
3,709
703
$4.7M
RapidJSON
2,130
381
$1.4M
Serde JSON
1,171
485
$564K
cJSON
896
153
$506K
jackson-core
869
257
$4.1M
JSON-C
768
228
$439K
orjson
740
282
$973K
UltraJSON
705
275
$12M
simdjson
679
203
$12M
Jansson
606
165
$561K
Typia
542
177
$3.4M
easyjson
440
166
$559K
Sonic
431
113
$9.8M
go-json
325
128
$3.2M
YAJL Ruby
319
154
$398K
jsoniter-scala
214
71
$2.8M
json-smart
193
51
$452K
fast-safe-stringify
69
33
$34K
Oj
0
0
$0
jsoniter
0
0
$506K
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