Apache-SSL An implementation of Apache with SSL capabilities. It is based on SSLeay/OpenSSL. It is not subject to US export control. [Free / Open Source] http://www.apache-ssl.org/

mod_ssl: The Apache Interface to OpenSSL The module provides strong cryptography for the Apache 1.3 webserver via SSL and TLS protocols, it was developed using OpenSSL, which is based on SSLeay. [Free / Open Source] (Ralf Engelschall, Ben Laurie) http://www.modssl.org/

Apache and Secure Transactions It explains what SSL is, why Apache does not have it built in, and why it is such a complex issue. (Apache Week) http://www.apacheweek.com/features/ssl

Covalent Technologies, Inc. Offers Raven SSL, which adds SSL support to Apache web server. Not exportable from North America. http://www.covalent.net/

Stunnel FAQ - Frequently Asked Questions Where to get the software, how to install and run it, and troubleshooting tips. http://www.onsight.com/faq/stunnel/

Apache+SSL Win32 HOWTO Setting up Apache with mod_ssl on Windows NT and 98 to provide secure HTTP services. http://tud.at/programm/apache-ssl-win32-howto.php3

Stunnel A universal SSL tunnel. It is designed to work as SSL encryption wrapper between remote client and local (inetd-startable) or remote server. [Free / Open Source] http://stunnel.mirt.net

SSLWrap An inetd service (for Unix operating systems) that sits over POP3, IMAP, and SMTP, and encrypts data using SSL. http://www.quiltaholic.com/rickk/sslwrap/

CERT Advisory: Multiple Vulnerabilities In OpenSSL "There are four remotely exploitable buffer overflows in OpenSSL. There are also encoding problems in the ASN.1 library used by OpenSSL. Several of these vulnerabilities could be used by a remote attacker to execute arbitrary code on the target system. All could be used to create denial of service." http://www.cert.org/advisories/CA-2002-23.html