ZUPS allows for monitoring the state of one or more UPS devices using SNMP and executing user-specified commands in case of power outage, such as email notifications and controlled remote host shutdowns. If the UPS devices are running on battery, the shutdown commands are executed for an arbitrary number of remote hosts, optionally with some delay specified for each host. ZUPS can be configured to ignore these delays and run the specified commands immediately if the UPS devices are running out of battery power. Custom plugins can easily be added in order to perform other checks.
asapm is an AfterStep look & feel Advanced Power Management (APM) monitor for laptop and notebook PCs running Linux or FreeBSD/NetBSD/OpenBSD and X Windows. It displays charge left in the battery, the time left to the total discharge of the battery, computer is connected to the mains or is working on a battery and the battery status high/low/critical.
MonAMI aims to be a standard place for monitoring the availability and performance of services. It can talk to many different monitoring systems while remaining easy to configure. It has a plugin structure, making it easy to add new things to monitor or to integrate with new monitoring systems.
TrinityOS is a step-by-step, example-driven HOWTO on building a very functional Linux box with strong security in mind. TrinityOS is well known for its strong packet firewall ruleset, Chrooted and Split DNS (v9 and v8), secured Sendmail (8.x), Linux PPTP, Serial consoles and Reverse TELNET, DHCPd, SSHd, UPSes, system performance tuning, the automated TrinityOS-Security implementation scripts, and much more.
upsguru is a daemon that monitors a UPS connected to a serial port. It has been extensively tested with a rebadged Centralion UPS. It communicates with init via the /dev/ initctl FIFO in order to control system services in the event of a power failure. The sample scripts include commands for SMS notification using gnokii. Protocol details are also contained in the archive.
wmmge is a little dockapp for Window Maker which monitors an MGE UPS. It shows the remaining time, and it blinks if this time is short. It uses PSP (Personal Solution-Pac) monitor, which can be downloaded from the MGE website: http://www.mgeups.com. It needs root permissions to send messages to the UPS.