Crates / simple_asn1 / Alternatives
Rust crate alternatives · data Oct 24, 2026
Alternatives to simple_asn1
Short answerThe closest alternatives to simple_asn1 on crates.io data are asn1-rs (602K real downloads a day), der-parser (588K real downloads a day), toml_datetime (3.2M real downloads a day). Of the 8 we list, the most used is toml_datetime, and 6 shipped a release in the last year. simple_asn1 itself gets 562,960 a day with 47 dependents.
Every alternative we found
| Alternative | Real downloads a day | vs simple_asn1 | Dependents | Last release | Why it is listed | |
|---|---|---|---|---|---|---|
| asn1-rs Pulled in | 601,623 | 1.07x | 29 | 5mo | keyword "asn1", keyword "der" | compare |
| der-parser Pulled in | 588,282 | 1.04x | 43 | 21mo | keyword "asn1", keyword "der" | compare |
| toml_datetime Pulled in | 3,215,444 | 5.71x | 29 | 16d | category Encoding, keyword "encoding" | compare |
| toml Foundational | 2,960,881 | 5.26x | 20,777 | 15d | category Encoding, keyword "encoding" | compare |
| toml_edit Widely used | 2,715,071 | 4.82x | 1,989 | 15d | category Encoding, keyword "encoding" | compare |
| utf8_iter Pulled in | 2,136,300 | 3.79x | 12 | 2.9y | category Encoding, keyword "encoding" | compare |
| toml_parser Pulled in | 1,763,218 | 3.13x | 22 | 15d | category Encoding, keyword "encoding" | compare |
| der Established | 1,514,408 | 2.69x | 378 | 49d | category Encoding, keyword "asn1" | compare |
How to choose
- Same job, not the same API. Each line is listed because it shares a crates.io category or keyword with simple_asn1; 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 simple_asn1: 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 simple_asn1, 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 gaining. 601,623 real downloads a day.asn1-rsRust crate. Parser/encoder for ASN.1 BER/DER data. Real use: 602K downloads a day on quiet days; 29 crates depend on it.Read it next →Also worth your time