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Crates / just

Rust crate · real downloads · data Oct 27, 2026

just downloads, and should you depend on it?

🤖 Just a command runner crates.io · docs.rs · repository

alternatives · is it still maintained?

Pulled inShould you depend on just? The data says

Few direct dependents and losing ground.

just: only 10 crates name it directly; small bumps on release days (1.29x the baseline).

5.9Kreal downloads a day (quiet-day median)
10crates depend on it
12 dayssince the last release (1.59.0)
-25%quiet-day trend vs the field, 90 days
How this verdict is decided (4 rules)
  • Usage: crates.io reverse dependencies (crates that list it as a dependency): 10,000+ = foundational, 1,000+ = widely used, 100+ = established, under 100 = few direct dependents.
  • Direction: the median quiet day in the last 30 days of the window against the first 30, read against the median tracked crate (the whole field moved +39% from late summer to October, so a raw trend says nothing). 10%+ ahead of the field = gaining; 10%+ behind = losing ground; otherwise steady. Steady with no release in 2+ years = quiet for years.
  • Release spikes: the median release-window day against the quiet-day baseline: under 1.15x = no spike, 1.15x to 1.3x = small bumps, 1.3x or more = jumps on release days.
  • Release recency: days since the newest version that was not yanked, from crates.io publish times.
Data: crates.io API, Jul 30, 2026 to Oct 26, 2026, fetched Oct 27, 2026. Downloads are not users: read the baseline as steady use, not a head count.
2026-07-30: 5,5302026-07-31: 5,7242026-08-01: 4,5382026-08-02: 3,8792026-08-03: 8,863 (release window)2026-08-04: 6,381 (release window)2026-08-05: 6,8832026-08-06: 5,8102026-08-07: 4,7802026-08-08: 2,8092026-08-09: 4,2392026-08-10: 4,6512026-08-11: 6,3882026-08-12: 7,4822026-08-13: 5,9242026-08-14: 4,8372026-08-15: 4,4232026-08-16: 3,5132026-08-17: 6,5762026-08-18: 7,4592026-08-19: 5,2502026-08-20: 5,2852026-08-21: 6,0002026-08-22: 3,6892026-08-23: 3,9942026-08-24: 6,3702026-08-25: 5,8222026-08-26: 6,6032026-08-27: 8,4852026-08-28: 6,0072026-08-29: 3,9272026-08-30: 6,7562026-08-31: 8,2222026-09-01: 6,7532026-09-02: 6,0192026-09-03: 7,6012026-09-04: 7,6752026-09-05: 5,1642026-09-06: 4,9132026-09-07: 5,8552026-09-08: 7,1212026-09-09: 6,9602026-09-10: 7,0862026-09-11: 7,6912026-09-12: 3,7982026-09-13: 4,3812026-09-14: 15,5142026-09-15: 11,4972026-09-16: 7,0612026-09-17: 7,6782026-09-18: 6,6042026-09-19: 4,0542026-09-20: 5,9172026-09-21: 5,8542026-09-22: 6,2222026-09-23: 9,6712026-09-24: 7,8342026-09-25: 10,0812026-09-26: 3,6172026-09-27: 4,0572026-09-28: 9,4712026-09-29: 8,8602026-09-30: 7,4462026-10-01: 5,9602026-10-02: 5,7042026-10-03: 4,1712026-10-04: 3,7212026-10-05: 5,8362026-10-06: 5,3312026-10-07: 5,7872026-10-08: 6,7192026-10-09: 6,0672026-10-10: 6,0662026-10-11: 5,8412026-10-12: 6,3252026-10-13: 7,6622026-10-14: 9,4462026-10-15: 7,740 (release window)2026-10-16: 7,502 (release window)2026-10-17: 4,9942026-10-18: 4,4532026-10-19: 7,0572026-10-20: 7,0092026-10-21: 6,5172026-10-22: 5,7972026-10-23: 5,6692026-10-24: 3,5102026-10-25: 3,2002026-10-26: 5,557

release window (release day + next day)quiet dayquiet-day median · download the 89 days as CSV

The numbers in one paragraphjust got 553,195 crates.io downloads from Jul 30, 2026 to Oct 26, 2026. 6% of them landed within 2 days of one of its 2 releases. On the other 85 quiet days it got a median of 5,924 a day, about 41,468 a week. Capping release days at that baseline leaves 546,405 release-adjusted downloads for the window.

What this means if you're choosing a dependency

  • You rarely add this one yourself. Only 10 crates name it directly.
  • Actively released. 1.59.0 shipped 12 days ago (Oct 15, 2026).
  • Fit check: license CC0-1.0, edition 2024, needs Rust 1.89.0 or newer (from the latest version's manifest).
  • Compare it by the baseline, not the raw count. 6% of its 553,195 downloads in the window landed within 2 days of a release; the steady number is 5,924 a day.

Alternatives that do a similar job

Crates that share its crates.io category or keywords, most similar first. Each line is the crate's own description, then how it compares on the same data.

What the chart says

  • Weekend quiet days ran at 63% of weekday quiet days (4,114 vs 6,576). A dip that deep is the signature of work-week CI pipelines and developers building on weekdays.
  • Biggest day: 15,514 on Sep 14, 2026, a quiet day with no release nearby.

Every number

All-time downloads2,855,164 (outside the crates.io top 1,000 by all-time downloads)
Downloads in the window553,195 (Jul 30, 2026 to Oct 26, 2026, 89 days)
Within 2 days of a release30,486 (5.5%)
Quiet-day median (baseline)5,924 a day; weekdays 6,576, weekends 4,114
Release-adjusted downloads546,405 (release-window days capped at the baseline)
Baseline rank#1202 of the 1329 crates we track
Quiet-day trend+4% raw, -25% against the median tracked crate (+39%)
Releases in the window2
Versions published, ever169
Latest version1.59.0, published Oct 15, 2026 (license CC0-1.0, edition 2024, MSRV 1.89.0)
First publishedOct 23, 2016
Reverse dependencies10

Releases in the window

Each one opens a 2-day release window on the chart.

VersionPublishedDownloads that version got (lifetime)
1.59.0Oct 15, 202641,875
1.58.0Aug 3, 2026317,635

How we compute this

crates.io counts every download, including CI runners, mirrors and bots that fetch each new version, so raw counts run high (why, in The Manual). We split the last 89 days into release windows (the day a version of just was published, plus the next day) and quiet days, and use the median quiet day as the baseline: an upper bound on steady use, never a head count. The method and data come from our study of 90 days of crates.io data from 69 crates, featured in This Week in Rust #674; check any crate live with the real-downloads checker.

Badge for your README

Maintainers can show the baseline in a README. It is optional, updates when we refresh the data, and links back here. Preview, then copy:

README, light

just real downloads per day badge

README, dark

Publishing a crate of your own? How to publish a Rust crate to crates.io, step by step.

Categories

Sources

Up next

Next in command line utilities: Next in Command line utilities by real downloads: 3,168 a day, 9 dependents. Few direct dependents and losing ground.espflashRust crate. A command-line tool for interacting with Espressif devices. Real use: 3.2K downloads a day on quiet days; 9 crates depend on it.Read it next →

Art: Nicholas Roerich, Nag Lake (1925). Public domain, via Wikimedia Commons.

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Free to cite and reuse under CC BY 4.0 with a link back. How it was collected: methods. Spotted an error? Corrections.

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