Crates / base64-simd / Alternatives
Rust crate alternatives · data Oct 24, 2026
Alternatives to base64-simd
Short answerThe closest alternatives to base64-simd on crates.io data are base64ct (1.3M real downloads a day), data-encoding (1.4M real downloads a day), simdutf8 (965K real downloads a day). Of the 8 we list, the most used is serde_json, and 7 shipped a release in the last year. base64-simd itself gets 600,975 a day with 116 dependents.
Every alternative we found
| Alternative | Real downloads a day | vs base64-simd | Dependents | Last release | Why it is listed | |
|---|---|---|---|---|---|---|
| base64ct Established | 1,305,115 | 2.17x | 439 | 9mo | category Encoding, category No standard library, keyword "base64" | compare |
| data-encoding Established | 1,416,151 | 2.36x | 854 | 3mo | category Encoding, category No standard library, keyword "base64" | compare |
| simdutf8 Established | 965,252 | 1.61x | 220 | 2.1y | category Encoding, category No standard library, keyword "simd" | compare |
| serde_json Foundational | 4,294,696 | 7.15x | 113,141 | 13d | category Encoding, category No standard library | compare |
| toml_datetime Pulled in | 3,215,444 | 5.35x | 29 | 16d | category Encoding, category Parser implementations | compare |
| toml Foundational | 2,960,881 | 4.93x | 20,777 | 15d | category Encoding, category Parser implementations | compare |
| toml_edit Widely used | 2,715,071 | 4.52x | 1,989 | 15d | category Encoding, category Parser implementations | compare |
| url Foundational | 2,520,673 | 4.19x | 16,906 | 10mo | category Encoding, category No standard library | compare |
How to choose
- Same job, not the same API. Each line is listed because it shares a crates.io category or keyword with base64-simd; 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 base64-simd: 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 base64-simd, 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 24, 2026. Built when we find 3 or more.
Up next
The closest alternative: Established and steady. 1,305,115 real downloads a day.base64ctRust crate. Pure Rust implementation of Base64 (RFC 4648) which avoids any usages of data-dependent branches/LUTs and thereby provides portable "best effort"...Read it next →Also worth your time