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hashbrown

v0.16.1 Growing

A Rust port of Google's SwissTable hash map

MIT OR Apache-2.0 Edition 2021 MSRV 1.65.0
Data structuresNo standard library #hash#hashmap#no_std#swisstable

Quick Verdict

  • !Pre-1.0: API may have breaking changes
  • โœ“Massive adoption (27.0K crates depend on it)
  • โœ“Permissive license (MIT OR Apache-2.0)

Security

Checking security advisories...
Downloads
1.3B
Dependents
27.0K
Releases
54
Size
148KB

Deep Insights

๐Ÿ“ˆ
Strong growth momentum

123.1M downloads in the last 30 days (4.1M/day), up 21% from the previous period.

๐Ÿ›๏ธ
Foundational crate

27.0K crates depend on hashbrown โ€” it's part of the Rust ecosystem's core infrastructure. Removing it from your dependency tree would be extremely difficult.

๐Ÿ”ฌ
Pre-1.0 for over a year

Despite being 7+ years old, hashbrown hasn't reached 1.0 yet. Expect potential API changes between versions.

๐ŸŒŸ
Used by top crates

Notable dependents include indexmap, rustls, ahash, tokio-util, object. When high-quality crates choose hashbrown, it's a strong quality signal.

Health Breakdown

Maintenance 14/25

Recency, release consistency, active ratio

Quality 12/25

Yanked ratio, deps, size, maturity, features

Community 17/20

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
3.3M/day avg+64%
01.0M2.0M3.0M4.0M5.0M12/291/162/32/213/113/28

Top Dependents

Version Adoption

v0.12.3
41%
v0.14.5
26%
v0.15.2
12%
v0.15.5
12%
v0.11.2
10%

Release Timeline

54 releases4 yankedsince 2018
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2018
8
2019
13
2020
8
2021
4
2022
6
2023
5
2024
5
2025
5
2026
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Yanked

Feature Flags

default =["default-hasher", "inline-more", "allocator-api2", "equivalent", "raw-entry"]

serdenightlyraw-entry*inline-more*default-hasher*rustc-dep-of-stdrustc-internal-api

README

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Maintainers

Dependencies
15
direct dependencies
Dependents
27.0K
crates depend on hashbrown

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