tpe-lkm is a Linux kernel module implementing Trusted Path Execution, a security feature that denies users from executing programs that are not owned by root, or are writable. This closes the door on a whole category of exploits where a malicious user tries to execute his or her own code to hack the system. Since the module doesn't use any kind of ACLs, it works out of the box with no configuration. It isn't complicated to test or deploy to current production systems. The module also has a few other grsecurity-inspired features implemented as "extras".
LogPipe is a module that extends the default PHP error handling function. It allows you to send logs to syslog, or pipe them to an external program. It extends a standard log line to contain the IP address and host name of the server under which the current script is executing, and the client IP address. The IP address and host name can be used by an external program to split or aggregate logs based on the virtual host. This module has been designed mainly as a complement for the TCPWebLog project.