grub has several advantages over lilo in a VPS environment; Linode and others usually have access to it through their web interface, as this is the bootloader they are expecting - and one only has to run grub-install /dev/sda once. However, even more important is being able to use rsync for transferring server images instead of dd.
Network Time Protocol daemon; the port is set up to be a client-only service - provides clear documentation, minimal dependencies and configuration.
Interface to the Linux Kernel's syscall filtering mechanism, seccomp.
Reliable and flexible web and proxy server; many modules can be disabled, as with a basic setup, one only utilizes a fraction of it's functionality.
Simple relay-only mail transport agent. The eximport should be removed, as it is installed by default during Crux setup; the sendmail parts overlap. Configuration is found under /usr/etc/nullmailer/.