Chev is a sane by default vulnerability check script that checks NIST and US Cert RSS feeds for a short list of software that you configure. It has two levels of priority, warn and critical, which allows for easy use with Nagios as a stand-alone script or in a cron job. Just add strings for your major pieces of software and chev will tell you when a vulnerability has been released.
zLogFabric is an all in one cross-platform logging solution that collects log lines/messages over a messaging system to a central server instance. The modular design enables the server to store, forward, alert, and generate live statistics out of the logged data. It can collect log information from files, syslog, log4j, log4net, and Windows event logs.