Crates / base64ct / Alternatives
Rust crate alternatives · data Oct 24, 2026
Alternatives to base64ct
Short answerThe closest alternatives to base64ct on crates.io data are pkcs1 (704K real downloads a day), der (1.5M real downloads a day), pkcs8 (1.2M real downloads a day). Of the 8 we list, the most used is base64, and 7 shipped a release in the last year. base64ct itself gets 1,305,115 a day with 439 dependents.
Every alternative we found
| Alternative | Real downloads a day | vs base64ct | Dependents | Last release | Why it is listed | |
|---|---|---|---|---|---|---|
| pkcs1 Pulled in | 704,103 | 0.54x | 65 | 19d | category Cryptography, category Encoding, keyword "crypto", keyword "pem" | compare |
| der Established | 1,514,408 | 1.16x | 378 | 49d | category Cryptography, category Encoding, keyword "crypto" | side by side |
| pkcs8 Established | 1,245,962 | 0.95x | 361 | 6mo | category Cryptography, category Encoding, keyword "crypto" | compare |
| base16ct Established | 922,439 | 0.71x | 174 | 10mo | category Cryptography, category Encoding, keyword "crypto" | compare |
| sec1 Pulled in | 854,812 | 0.65x | 85 | 7mo | category Cryptography, category Encoding, keyword "crypto" | compare |
| base64-simd Established | 600,975 | 0.46x | 116 | 3.8y | category Encoding, category No standard library, keyword "base64" | compare |
| const-oid Established | 2,079,241 | 1.59x | 160 | 10mo | category Cryptography, category Encoding | compare |
| base64 Foundational | 4,638,981 | 3.55x | 19,537 | 3mo | category Encoding, keyword "base64" | compare |
How to choose
- Same job, not the same API. Each line is listed because it shares a crates.io category or keyword with base64ct; 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 base64ct: 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 base64ct, 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: Few direct dependents and steady. 704,103 real downloads a day.pkcs1Rust crate. Pure Rust implementation of Public-Key Cryptography Standards (PKCS) #1: RSA Cryptography Specifications Version 2.2 (RFC 8017). Real use: 704K downloads a...Read it next →Also worth your time