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DiskLED is a flexible hard disk and general system activity indicator system tray applet. What do you do when your computer reacts sluggishly to even the simplest commands? You probably look at its hard disk LED to determine if the disk is busy, because if it is, the only thing that really helps is waiting (apart from buying a faster disk or SSD). Problem solved – if you are sitting right next to the machine. But what if you are using a protocol like RDP or ICA to connect to a remote computer or VM? No HDD LED, no quick and simple way to check for hard drive activity. This has been bugging me enough to write a software replacement: DiskLED.

DiskLED queries performance counters for disk activity data. Basically, what it does is periodically query a specific counter and display the current value graphically. The cool thing is it is not limited to hard disk activity data. Using a simple INI file, DiskLED can be configured to display any counter’s data.
Obviously an LED type display is well-suited for activity data only. When dealing with many other counters, a different visualization method is needed. Here you go: DiskLED has a second display mode, similar to how Task Manager shows CPU utilization.