Apps similar to UPower include PowerTOP, which is free and open source. Other options are RMClock, Laptop Mode Tools, Jupiter Applet and cbatticon. In total there are seven Battery Saver Utilities like UPower for Linux, Windows and Mac.
PowerTOP is a Linux tool to diagnose issues with power consumption and power management. In addition to being a diagnostic tool, PowerTOP also has an interactive mode where the user can experiment various power management settings for cases where the Linux distribution has not...
United States
RightMark CPU Clock Utility (RMClock) is a small GUI application designed for real-time CPU frequency, throttling and load level monitoring and on-the-fly adjustment of the CPU performance level on supported CPU models via processors power management model-specific registers...
Russia
Laptop Mode Tools is a package of userspace scripts for Linux kernel "laptop mode".
Jupiter is a light weight power and hardware control applet for Linux. It is designed to improve battery life of a portable Linux computer by integrating with the operating system and changing parameters of the computer based on battery or powered connection.
cbatticon is a lightweight GTK+ system tray application which tells you the state of your battery. If your battery reaches a certain point, it will pop up a message using libnotify.
Italy
EU
Verdiem delivers enterprise-class IT energy management & efficiency solutions for PCs, Macs, and Cisco EnergyWise devices – providing greater energy savings and IT efficiency.
Faronics Power Save is an effective and reliable energy conservation tool that accurately manages energy consumption throughout ain a multiple workstation environment and significantly cuts down on energy expenditures.
Netherlands
Canada