RapidJson Alternatives

Apps similar to RapidJson include simdjson, which is free and open source. Other options are sj.h. Between them they cover self-hosting.

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RapidJson alternatives page was last updated Sep 22, 2025

simdjson
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JSON is everywhere on the Internet. Servers spend a lot of time parsing it. We need a fresh approach. The simdjson library uses commonly available SIMD instructions and microparallel algorithms to parse JSON 2.5x faster than anything else out there.
Cost / License
Free
Open Source (Apache-2.0)
Origin
Canada
Platforms
Self-Hosted
R
Good alternative?Is simdjson a good alternative to RapidJson?
sj.h
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A tiny little JSON parsing library.
Cost / License
Free
Open Source (Unlicense)
Platforms
Self-Hosted
R
Good alternative?Is sj.h a good alternative to RapidJson?

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