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crc-fast

v1.10.0 Stable

World's fastest generic CRC16, CRC32, and CRC64 calculator using SIMD. Supplies a C-compatible shared library for use in other languages.

MIT OR Apache-2.0 Edition 2021 MSRV 1.89
AlgorithmsEncodingHardware support #checksum#simd#crc#fast#accelerated

Quick Verdict

  • โœ“Stable API (1.x for 1+ years)
  • โœ“Trusted by 209 crates
  • โœ“Permissive license (MIT OR Apache-2.0)

Security

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Downloads
26.9M
Dependents
209
Releases
18
Size
1.2MB

Deep Insights

๐Ÿ“Š
Steady growth

4.1M downloads in the last 30 days (136.4K/day), up 10% from the previous period.

๐Ÿ”—
Moderate adoption

209 crates depend on crc-fast. Reasonable ecosystem adoption, though not yet a core dependency.

โœ…
Stable API

Reached 1.0 over a year ago. The API surface is settled, making it safe for production use.

๐ŸŒŸ
Used by top crates

Notable dependents include aws-smithy-checksums, uucore, s3s, commonware-cryptography, minio. When high-quality crates choose crc-fast, it's a strong quality signal.

Health Breakdown

Maintenance 12/25

Recency, release consistency, active ratio

Quality 19/25

Yanked ratio, deps, size, maturity, features

Community 12/20

Reverse deps, ownership, ecosystem

Popularity 8/15

Downloads, momentum, growth trend

Documentation 12/15

Docs, repo, license, metadata

Download Trend

Daily downloads ยท last 90 days
137K/day avg-17%
050K100K150K200K250K2/263/164/34/215/95/26

Top Dependents

Version Adoption

v1.9.0
51%
v1.6.0
36%
v1.10.0
8%
v1.5.0
3%
v1.8.0
2%

Release Timeline

10 releasessince 2025
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2026
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Feature Flags

default =["std", "panic-handler", "ffi"]

cliffi*std*alloccachevpclmulqdqpanic-handler*optimize_crc32_autooptimize_crc32_sse_v4s3x3optimize_crc32_neon_blendedoptimize_crc32_neon_v12e_v1optimize_crc32_avx512_v4s3x3optimize_crc32_neon_v3s4x2e_v2optimize_crc32_neon_eor3_v9s3x2e_s3optimize_crc32_avx512_vpclmulqdq_v3x2

README

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Maintainers

Dependencies
13
direct dependencies
Dependents
209
crates depend on crc-fast

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