There are several solutions that provide secure transactions for Apache servers.
This enables Apache servers to be used for ecommerce or other scenarios where
sensitive information is exchanged (like credit card numbers).
Apache-SSL are open source
implementations. They are European based, unencumbered by RSA patents.
Red Hat offers a secure server derived from Apache. Red Hat adquired C2Net, makers
of StrongHold, another Secure server derived from Apache.
Covalent sells secure versions of Apache as well as the CovalentSSL module that
plugs on existing Apache installations.
Credit card transactions
Apache specific solutions exist for credit card transactions:
Cypay credit card module for
Apache. Template based, tax calculations.
Covalent credator, multiple
clearinghouses support, failover operation, PHP, Perl, Java support.