futures-core

v0.3.32 Growing

The core traits and types in for the `futures` library.

MIT OR Apache-2.0 Edition 2018 MSRV 1.36

GitHub ↗ crates.io ↗ Compare with…

Quick Verdict

✓Actively maintained (updated 40d ago)
!Pre-1.0: API may have breaking changes
✓Massive adoption (14.8K crates depend on it)
✓Tiny footprint (15KB, 1 deps)
✓Permissive license (MIT OR Apache-2.0)

Security

Checking security advisories...

Downloads

543.1M

Dependents

14.8K

Releases

Size

15KB

Deep Insights

📈

Strong growth momentum

43.9M downloads in the last 30 days (1.5M/day), up 24% from the previous period.

🏛️

Foundational crate

14.8K crates depend on futures-core — it's part of the Rust ecosystem's core infrastructure. Removing it from your dependency tree would be extremely difficult.

👤

Prolific maintainer

The primary maintainer publishes 63 crates. This suggests deep Rust expertise and long-term commitment to the ecosystem.

🔬

Pre-1.0 for over a year

Despite being 8+ years old, futures-core hasn't reached 1.0 yet. Expect potential API changes between versions.

🪶

Minimal dependencies

Only 1 direct dependencies. Lean dependency tree means faster builds and lower supply chain risk.

📐

Compact crate

At 14KB, futures-core is lightweight. Small crate size correlates with focused, well-scoped functionality.

🌟

Used by top crates

Notable dependents include hyper, futures-util, futures-channel, h2, tokio-util. When high-quality crates choose futures-core, it's a strong quality signal.