Cyrus|http://cyrusimap.web.cmu.edu/generalinfo.html
Cyrus SASL|http://asg.web.cmu.edu/sasl/sasl-library.html
GNU|http://www.gnu.org/software/
-GDBM|http://www.gnu.org/software/gdbm/
+GnuTLS|http://www.gnu.org/software/gnutls/
Heimdal|http://www.pdc.kth.se/heimdal/
JLDAP|http://www.openldap.org/jldap/
MIT Kerberos|http://web.mit.edu/kerberos/www/
OpenLDAP Software|http://www.openldap.org/software/
OpenSSL|http://www.openssl.org/
Perl|http://www.perl.org/
-TCL|http://www.tcl.tk/
SDF|http://search.cpan.org/src/IANC/sdf-2.001/doc/catalog.html
UMLDAP|http://www.umich.edu/~dirsvcs/ldap/ldap.html
!endblock
IDN|Internationalized Domain Name
ID|Identification
ID|Identifier
+IDL|Index Data Lookups
IP|Internet Protocol
IPC|Inter-process communication
IPsec|Internet Protocol Security