Rust crate alternatives · data Oct 27, 2026
Alternatives to proj
Short answerThe closest alternatives to proj on crates.io data are geo (57.4K real downloads a day), geojson (24.5K real downloads a day), socket2 (4M real downloads a day). Of the 8 we list, the most used is socket2, and 7 shipped a release in the last year. proj itself gets 2,518 a day with 29 dependents.
Every alternative we found
| Alternative | Real downloads a day | vs proj | Dependents | Last release | Why it is listed | |
|---|---|---|---|---|---|---|
| geo Established | 57,418 | 22.80x | 421 | 6mo | category Geospatial, keyword "geo" | compare |
| geojson Established | 24,458 | 9.71x | 220 | 7mo | keyword "geo" | compare |
| socket2 Widely used | 4,034,112 | 1602.11x | 1,539 | 3mo | category API bindings | compare |
| flate2 Widely used | 2,127,583 | 844.95x | 7,758 | 57d | category API bindings | compare |
| libloading Widely used | 1,576,622 | 626.14x | 1,577 | 12mo | category API bindings | compare |
| security-framework Established | 1,156,937 | 459.47x | 179 | 8mo | category API bindings | compare |
| web-time Widely used | 1,133,377 | 450.11x | 1,163 | 2.6y | category API bindings | compare |
| zstd-safe Pulled in | 1,111,608 | 441.46x | 55 | 8d | category API bindings | compare |
How to choose
- Same job, not the same API. Each line is listed because it shares a crates.io category or keyword with proj; read its description before you swap.
- More dependents means more answered questions and a smaller chance it disappears.
- Check the last release against how fast you need fixes. For proj: is it still maintained?
Rules
Alternatives = tracked crates (top 1000 by downloads) that share a specific crates.io category (2 points each) or keyword (3 points each) with proj, most similar first; its own parts (same name prefix) and crates it depends on or that depend on it are left out, because those are companions, not substitutes. Real downloads = quiet-day median, crates.io data Oct 27, 2026. Built when we find 3 or more.
Up next
The closest alternative: Established and steady. 57,418 real downloads a day.geoRust crate. Geospatial primitives and algorithms. Real use: 57.4K downloads a day on quiet days; 421 crates depend on it.Read it next →Also worth your time
Art: Nicholas Roerich, Nag Lake (1925). Public domain, via Wikimedia Commons.
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