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specs

v0.20.0 Growing

Specs is an Entity-Component-System library written in Rust.

MIT OR Apache-2.0 Edition 2021 MSRV 1.70.0
ConcurrencyGame engines #gamedev#entity#component#ecs

Quick Verdict

  • โœ•Not updated for 2+ years
  • !Pre-1.0: API may have breaking changes
  • โœ“Trusted by 612 crates
  • โœ“Permissive license (MIT OR Apache-2.0)

Security

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Downloads
984.6K
Dependents
612
Releases
43
Size
92KB

Deep Insights

๐Ÿ“Š
Stable downloads

23.4K downloads in the last 30 days (781/day). Volume is roughly flat compared to the previous period.

๐Ÿ”—
Moderate adoption

612 crates depend on specs. Reasonable ecosystem adoption, though not yet a core dependency.

๐Ÿ‘ค
Prolific maintainer

The primary maintainer publishes 100 crates. This suggests deep Rust expertise and long-term commitment to the ecosystem.

๐Ÿ”ฌ
Pre-1.0 for over a year

Despite being 9+ years old, specs hasn't reached 1.0 yet. Expect potential API changes between versions.

๐ŸŒŸ
Used by top crates

Notable dependents include specs-hierarchy, amethyst_core, bracket-geometry, voxelize, castle-game. When high-quality crates choose specs, it's a strong quality signal.

Health Breakdown

Maintenance 6/25

Recency, release consistency, active ratio

Quality 15/25

Yanked ratio, deps, size, maturity, features

Community 18/20

Reverse deps, ownership, ecosystem

Popularity 7/15

Downloads, momentum, growth trend

Documentation 15/15

Docs, repo, license, metadata

Download Trend

Daily downloads ยท last 90 days
769/day avg+18%
01K2K3K4K12/291/162/32/213/113/28

Top Dependents

Version Adoption

v0.16.1
40%
v0.14.3
20%
v0.15.1
17%
v0.20.0
14%
v0.18.0
10%

Release Timeline

43 releasessince 2016
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2016
7
2017
9
2018
17
2019
4
2020
2
2021
1
2022
1
2023
2
2024
2025
2026
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Feature Flags

default =["parallel"]

derivestdwebnightlyparallel*uuid_entityshred-derivestorage-event-control

README

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Maintainers

Dependencies
19
direct dependencies
Dependents
612
crates depend on specs

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