Crates / memchr / Alternatives
Rust crate alternatives · data Oct 27, 2026
Alternatives to memchr
Short answerThe closest alternatives to memchr on crates.io data are tantivy (53.6K real downloads a day), elasticsearch (23.7K real downloads a day), lancedb (11.7K real downloads a day). Of the 4 we list, the most used is tantivy, and 3 shipped a release in the last year. memchr itself gets 4,765,439 a day with 2,274 dependents.
Every alternative we found
| Alternative | Real downloads a day | vs memchr | Dependents | Last release | Why it is listed | |
|---|---|---|---|---|---|---|
| tantivy Established | 53,551 | 0.01x | 337 | 10d | keyword "search" | side by side |
| elasticsearch Pulled in | 23,661 | 0.00x | 51 | 15mo | keyword "search" | compare |
| lancedb Established | 11,666 | 0.00x | 100 | 20d | keyword "search" | compare |
| opensearch Pulled in | 6,428 | 0.00x | 16 | 7mo | keyword "search" | compare |
How to choose
- Same job, not the same API. Each line is listed because it shares a crates.io category or keyword with memchr; 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 memchr: 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 memchr, 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. 53,551 real downloads a day.tantivyRust crate. Search engine library. Real use: 53.6K downloads a day on quiet days; 337 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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