h3

v0.0.8 Growing

An async HTTP/3 implementation.

MIT Edition 2021 MSRV 1.70

Network programming Web programming::HTTP client Web programming::HTTP server #quic#http3#h3

GitHub ↗ Docs ↗ crates.io ↗ Compare with…

Quick Verdict

!Pre-1.0: API may have breaking changes
✓Trusted by 696 crates
✓Team maintained (3 owners)
✓Permissive license (MIT)

Security

Checking security advisories...

Downloads

2.0M

Dependents

696

Releases

Size

125KB

Deep Insights

📈

Strong growth momentum

190.1K downloads in the last 30 days (6.3K/day), up 35% from the previous period.

🔗

Moderate adoption

696 crates depend on h3. Reasonable ecosystem adoption, though not yet a core dependency.

👤

Prolific maintainer

The primary maintainer publishes 186 crates. This suggests deep Rust expertise and long-term commitment to the ecosystem.

🔬

Pre-1.0 for over a year

Despite being 7+ years old, h3 hasn't reached 1.0 yet. Expect potential API changes between versions.

🌟

Used by top crates

Notable dependents include reqwest, hickory-proto, hickory-server, h3-quinn, h3-datagram. When high-quality crates choose h3, it's a strong quality signal.

Health Breakdown

Maintenance 6/25

Recency, release consistency, active ratio

Quality 13/25

Yanked ratio, deps, size, maturity, features

Community 19/20

Reverse deps, ownership, ecosystem

Popularity 8/15

Downloads, momentum, growth trend

Documentation 15/15

Docs, repo, license, metadata

Download Trend

Daily downloads · last 90 days

5K/day avg+28%

Top Dependents

Most downloaded crates that depend on h3

Version Adoption

v0.0.7

37%

v0.0.8

28%

v0.0.6

19%

v0.0.2

11%

v0.0.3

Release Timeline

9 releasessince 2019

2019

2020

2021

2022

2023

2024

2025

2026

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Feature Flags

tracingi-implement-a-third-party-backend-and-opt-into-breaking-changes

README

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Maintainers

Dependencies

direct dependencies