Toolkits

These are references to various toolkits and libraries which implement the SSL/TLS protocols and related standards like the X.509 certificate system.

OpenSSL
http://www.openssl.org/
The open-source toolkit for SSL/TLS
RSA BSAFE SSL-C
http://www.aus.rsa.com/products/sslc/
The commercial successor toolkit to SSLeay from RSA DSI
SSLPlus
http://www.consensus.com/sslplus/
Another commercial toolkit for SSL/TLS from Certicom/Consensus
Spyrus TLS Gold Toolkit
http://www.spyrus.com/content/products/ssl/tlsgold/
Another commercial toolkit for SSL/TLS from Spyrus
SSLRef
ftp://ftp.replay.com/pub/crypto/SSL/
Netscape's old SSL reference library from Netscape/Consensus (no longer available)
Oscar
http://oscar.dstc.qut.edu.au/
A public key certification system's toolkit
LSM-PKCS11
http://www.clizio.com/lsmpkcs11.html
A security module accessible as a PKCS#11 library