Here are some key features of "Hawkscope":

· Completely Free and Open Source
· Cross platform, runs on Windows, Linux and Mac
· Navigation through hard drive contents via dynamic popup menu
· System wide global hotkey for invoking menu right under mouse location (on Windows and Linux only)
· Configurable favourite locations for quick access
· Hide unwanted drives, folders or files by adding them to blacklist
· Plugin system

Requirements:

· Java 6 Runtime Environment (JRE 6 Update 10 RC or greater recommended).