Please take dCap from one of the repositories. We will not provide it any longer on the webpage.

dCap is available through EPEL. The links below point to EPEL and for the Debian packages to RPMSEEK.Here you can find an overview of the repos dcap can be found in: Repo Overview

OS Components Download
SL 6.1 dCap client source dcap-2.47.8-1.el6.src
x64 SL 6.1 dCap client dcap-2.47.8-1.el6.x86_64.rpm
dCap devel dcap-devel-2.47.8-1.el6.x86_64.rpm
dCap libs dcap-libs-2.47.8-1.el6.x86_64.rpm
dCap tunnel gsi dcap-tunnel-gsi-2.47.8-1.el6.x86_64.rpm
dCap tunnel kerberos dcap-tunnel-krb-2.47.8-1.el6.x86_64.rpm
dCap tunnel ssl dcap-tunnel-ssl-2.47.8-1.el6.x86_64.rpm
dCap tunnel telnet dcap-tunnel-telnet-2.47.8-1.el6.x86_64.rpm
i686 SL 6.1 dCap client dcap-2.47.8-1.el6.i686.rpm
dCap devel dcap-devel-2.47.8-1.el6.i686.rpm
dCap libs dcap-libs-2.47.8-1.el6.i686.rpm
dCap tunnel gsi dcap-tunnel-gsi-2.47.8-1.el6.i686.rpm
dCap tunnel kerberos dcap-tunnel-krb-2.47.8-1.el6.i686.rpm
dCap tunnel ssl dcap-tunnel-ssl-2.47.8-1.el6.i686.rpm
dCap tunnel telnet dcap-tunnel-telnet-2.47.8-1.el6.i686.rpm
SL 5 dCap client source dcap-2.47.8-1.el5.src.rpm
x64 SL 5 dCap client dcap-2.47.8-1.el5.x86_64.rpm
dCap devel dcap-devel-2.47.8-1.el5.x86_64.rpm
dCap libs dcap-libs-2.47.8-1.el5.x86_64.rpm
dCap tunnel gsi dcap-tunnel-gsi-2.47.8-1.el5.x86_64.rpm
dCap tunnel kerberos dcap-tunnel-krb-2.47.8-1.el5.x86_64.rpm
dCap tunnel ssl dcap-tunnel-ssl-2.47.8-1.el5.x86_64.rpm
dCap tunnel telnet dcap-tunnel-telnet-2.47.8-1.el5.x86_64.rpm
i686 SL 5 dCap client dcap-2.47.8-1.el5.i386.rpm
dCap devel dcap-devel-2.47.8-1.el5.i386.rpm
dCap libs dcap-libs-2.47.8-1.el5.i386.rpm
dCap tunnel gsi dcap-tunnel-gsi-2.47.8-1.el5.i386.rpm
dCap tunnel kerberos dcap-tunnel-krb-2.47.8-1.el5.i386.rpm
dCap tunnel ssl dcap-tunnel-ssl-2.47.8-1.el5.i386.rpm
dCap tunnel telnet dcap-tunnel-telnet-2.47.8-1.el5.i386.rpm
debian dCap client dcap_2.47.8-1_amd64.deb
dCap devel dcap-dev_2.47.8-1_amd64.deb
libdcap libdcap1_2.47.8-1_amd64.deb
dCap tunnel gsi dcap-tunnel-gsi_2.47.8-1_amd64.deb
dCap tunnel kerberos dcap-tunnel-krb_2.47.8-1_amd64.deb
dCap tunnel ssl dcap-tunnel-ssl_2.47.8-1_amd64.deb
dCap tunnel telnet dcap-tunnel-telnet_2.47.8-1_amd64.deb

The older dCap versions are available from this link.