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rkyv

v0.8.15 Growing

Zero-copy deserialization framework for Rust

MIT Edition 2021 MSRV 1.81
EncodingNo standard libraryNo standard library::No dynamic allocation #serialization#zero-copy#archive#no_std#rkyv

Quick Verdict

  • โœ“Actively maintained (updated 45d ago)
  • !Pre-1.0: API may have breaking changes
  • โœ“Massive adoption (8.2K crates depend on it)
  • !Heavy dependency tree (23 direct deps)
  • โœ“Permissive license (MIT)

Security

Checking security advisories...
Downloads
93.1M
Dependents
8.2K
Releases
92
Size
166KB

Deep Insights

๐Ÿ“Š
Steady growth

9.1M downloads in the last 30 days (304.2K/day), up 10% from the previous period.

๐Ÿ”—
Widely adopted

8.2K crates depend on rkyv. Strong ecosystem adoption means battle-tested code and long-term stability.

โš ๏ธ
Single maintainer risk

rkyv has only 1 owner despite 8.2K dependents. This is a bus-factor concern โ€” consider the implications for long-term support.

๐Ÿ”ฌ
Pre-1.0 for over a year

Despite being 5+ years old, rkyv hasn't reached 1.0 yet. Expect potential API changes between versions.

๐Ÿ“ฆ
Heavy dependency tree

23 direct dependencies. Consider the impact on compile times and supply chain complexity.

๐ŸŒŸ
Used by top crates

Notable dependents include chrono, half, ordered-float, litemap, num-complex. When high-quality crates choose rkyv, it's a strong quality signal.

Health Breakdown

Maintenance 16/25

Recency, release consistency, active ratio

Quality 15/25

Yanked ratio, deps, size, maturity, features

Community 15/20

Reverse deps, ownership, ecosystem

Popularity 8/15

Downloads, momentum, growth trend

Documentation 15/15

Docs, repo, license, metadata

Download Trend

Daily downloads ยท last 90 days
259K/day avg+49%
0100K200K300K400K500K12/291/162/32/213/113/28

Top Dependents

Version Adoption

v0.7.45
54%
v0.7.42
18%
v0.7.46
11%
v0.7.44
11%
v0.8.11
7%

Release Timeline

92 releasessince 2020
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2020
5
2021
48
2022
11
2023
4
2024
17
2025
3
2026
4
Less
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Feature Flags

default =["std", "bytecheck"]

std*allocuuid-1alignedbytecheck*unalignedbig_endianindexmap-2triomphe-0_1little_endianhashbrown-0_16pointer_width_16pointer_width_32pointer_width_64

README

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Maintainers

Dependencies
23
direct dependencies
Dependents
8.2K
crates depend on rkyv

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