Rust crates side by side · data Oct 24, 2026

rustix vs fs2

Short answerBy steady daily use, rustix is bigger: 3,390,892 real downloads a day against 259,151 for fs2 (13.1x). 1,684 crates depend on rustix and 1,409 on fs2. rustix last shipped 38 days ago, fs2 8.8 years ago.

rustix

Widely used

Widely used and steady.

1,684 crates depend on it; downloads don't spike on releases.

Safe Rust bindings to POSIX/Unix/Linux/Winsock-like syscalls

fs2

Widely used

Widely used and quiet for years.

1,409 crates depend on it; no release in the last 90 days, so its count is all steady use.

Cross-platform file locks and file duplication.

rustixfs2 · 100% = that crate's normal quiet day, so a spike to 300% is triple its usual traffic

Every number, side by side

Same window, same method	rustix	fs2
Real downloads a day	3,390,892	259,151
Crates that depend on it	1,684	1,409
Last release	1.1.5, 38 days ago	0.4.3, 8.8 years ago
Trend vs the field	+1%	+5%
Release-window share	2.4%	0.0%
Downloads in the window	314,948,187	24,000,832
All-time downloads	1,293,003,640	96,240,199
Versions published	170	12
License	Apache-2.0 WITH LLVM-exception OR Apache-2.0 OR MIT	MIT/Apache-2.0
MSRV	1.65	not set
First published	Oct 29, 2021	Sep 2, 2015

Which to pick

Downloads tell you what is common, not what fits. Each crate's own description above says what it is for; when the jobs differ, pick by the job.
When both fit, prefer the one more crates depend on (rustix, 1,684 dependents): more eyes, more answered questions, and you may already have it in your tree.
Check the release dates against your own pace: rustix 38 days ago, fs2 8.8 years ago.

Also in this space

socket2Widely usedUtilities for handling networking sockets with a maximal amount of configuration possible intended4,034,112 a day, 1,539 dependents ipnetEstablishedProvides types and useful methods for working with IPv4 and IPv6 network addresses, commonly called IP...2,000,731 a day, 780 dependents ipnetworkEstablishedA library to work with IP CIDRs in Rust268,630 a day, 284 dependents same-fileEstablishedA simple crate for determining whether two file paths point to the same file1,902,047 a day, 290 dependents

Compare 4 of them side by side →

Method

Real downloads = the median day with no release that day or the day before, from the crates.io API (Jul 27, 2026 to Oct 23, 2026). Raw crates.io counts include CI and bots and run high (why); the method is from our 90-day study.

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