c-icap is an implementation of an ICAP server. It can be used with HTTP proxies that support the ICAP protocol such as the Squid 3.x HTTP proxy server to implement content adaptation/filtering services.
ClamSAP exists of two 'C' shared libraries which link between ClamAV and the Virus Scan Interface (VSI) of SAP (offical name: NW-VSI). A SAP application can use the ClamAV engine to scan for malicious uploads in HTTP uploads for example.
SAVI-SAP is a shared library which links between Sophos Scan Interface SAVI and the SAP Virus Scan Interface (offical name: NW-VSI). A SAP application can use the Sophos engine to scan for malicious uploads in HTTP uploads for example.