1. System Logging Daemon This package implements the system log daemon, which is an enhanced version of the standard Berkeley utility program. It is responsible for providing logging of messages received from programs and facilities on the local host as well as from remote hosts. From Debian 3.0r0 APT

2. The sysklogd package contains two system utilities (syslogd and klogd) which provide support for system logging. Syslogd and klogd run as daemons (background processes) and log system messages to different places, like sendmail logs, security logs, error logs, etc. From Mandrake 9.0 RPM