1.openssl / openssl
General purpose TLS and crypto library
- cryptography
- openssl
- encryption
- tls
- ssl
- decryption
+730 stars
from 30,453 · score 6.59
Trending repositories
Ranked by Attention Score: stars gained over the last 90 complete days
8 repositories by Attention Score · Aug 6, 2026 – Nov 3, 2026 (UTC)
2.Mbed-TLS / mbedtls
An open source, portable, easy to use, readable and flexible TLS library, and reference implementation of the PSA Cryptography API. Releases are on a varying cadence, typically around 3 - 6 months between releases.
+219 stars
from 6,831 · score 5.39
+210 stars
from 13,829 · score 5.35
4.wolfSSL / wolfssl
The wolfSSL library is a small, fast, portable implementation of TLS/SSL for embedded devices to the cloud. wolfSSL supports up to TLS 1.3 and DTLS 1.3! Update to wolfSSL 5.9.1 for the latest CVE fixes.
- ssl
- tls
- cryptography
- security
- openssl
- tls13
- +14 more
+95 stars
from 2,889 · score 4.56
5.P-H-C / phc-winner-argon2
The password hash Argon2, winner of PHC
+71 stars
from 5,328 · score 4.28
6.bitcoin-core / secp256k1
Optimized C library for EC operations on curve secp256k1
+50 stars
from 2,452 · score 3.93
+45 stars
from 4,740 · score 3.83
+37 stars
from 4,985 · score 3.64