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kiddo

v5.3.0 Stable

A high-performance, flexible, ergonomic k-d tree library. Ideal for geo- and astro- nearest-neighbour and k-nearest-neighbor queries

MIT OR Apache-2.0 Edition 2021
#knn#kd-tree#kd#kdtree#nearest-neighbor

Quick Verdict

  • โœ“Actively maintained (updated 8d ago)
  • โœ“Stable API (5.x for 4+ years)
  • โœ“Trusted by 288 crates
  • !Heavy dependency tree (40 direct deps)
  • โœ“Permissive license (MIT OR Apache-2.0)

Security

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Downloads
5.2M
Dependents
288
Releases
50
Size
158KB

Deep Insights

๐Ÿ“Š
Stable downloads

602.4K downloads in the last 30 days (20.1K/day). Volume is roughly flat compared to the previous period.

๐Ÿ”—
Moderate adoption

288 crates depend on kiddo. Reasonable ecosystem adoption, though not yet a core dependency.

โœ…
Stable for 4+ years

The API has been stable (1.x) for over 4 years with 50 releases. This level of maturity means you can depend on it without worrying about breaking changes.

๐Ÿ“ฆ
Heavy dependency tree

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

๐ŸŒŸ
Used by top crates

Notable dependents include reverse_geocoder, adder-codec-rs, osm-lump-ways, lutgen, geosuggest-core. When high-quality crates choose kiddo, it's a strong quality signal.

Health Breakdown

Maintenance 18/25

Recency, release consistency, active ratio

Quality 16/25

Yanked ratio, deps, size, maturity, features

Community 10/20

Reverse deps, ownership, ecosystem

Popularity 8/15

Downloads, momentum, growth trend

Documentation 13/15

Docs, repo, license, metadata

Download Trend

Daily downloads ยท last 90 days
18K/day avg+38%
010K20K30K40K12/291/162/32/213/113/28

Top Dependents

Version Adoption

v2.1.2
70%
v5.2.2
26%
v4.2.1
2%
v5.2.4
1%
v5.0.3
1%

Release Timeline

50 releases3 yankedsince 2021
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2021
9
2022
3
2023
23
2024
8
2025
5
2026
2
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Yanked

Feature Flags

default =["tracing", "fixed"]

csvf16lasrkyvsimdfixed*serderkyv_08tracing*test_utilsmodified_van_emde_boas

README

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Maintainers

Dependencies
40
direct dependencies
Dependents
288
crates depend on kiddo

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