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Alternatives · JSON parsing

Alternatives to orjson on PyPI

For serialising and parsing JSON, beyond the stdlib. Below are packages that fill the same role — on PyPI, and across other ecosystems.

PyPI In PyPI
ujsonv5.12.1
PyPI

Ultra fast JSON encoder and decoder for Python

MaintenanceHealthy
PopularityUnknown
SecurityClean
DepsZero deps
Maintained. Maintained, actively maintained.
Cross-language equivalents
crates.io· Rust
serde_jsonv1.0.150
crates.io

A JSON serialization file format

MaintenanceHealthy
PopularityTop 1%
SecurityClean
DepsZero deps
Safe default. Widely trusted across the ecosystem, actively maintained.
RubyGems· Ruby
ojv3.17.1
RubyGems

The fastest JSON parser and object serializer.

MaintenanceHealthy
PopularityWidely used
SecurityClean
DepsZero deps
Solid choice. Well-adopted and active, actively maintained.
Maven· Java
com.fasterxml.jackson.core:jackson-databindv2.22.0
Maven

No description provided.

MaintenanceHealthy
PopularityUnknown
SecurityClean
DepsZero deps
Maintained. Maintained, actively maintained.
NuGet· .NET
newtonsoft.jsonv13.0.4
NuGet

No description provided.

MaintenanceAging
PopularityUnknown
SecurityClean
DepsZero deps
Aging — last published 8 months ago — check before adopting.

These suggestions come from a hand-curated concept map of canonical packages per role. They’re intentionally narrow — only widely-adopted packages in each category. Phase 5 will add AI-generated alternatives.