Prevent Disk Sleep Prevent Disk Sleep is designed to block your USB, primary, secondary hard disk drive from going into sleep mode. Free Windows No features added Add a feature 2 Like
NoSleepHD NoSleepHD is a simple program which writes an empty text file every few minutes to your external hard disk drive(s) to keep it from going into auto-sleep mode. Free Open Source Windows No features added Add a feature 6 Like
PingHD An opensource, cross-platform, and standalone GUI tool to keep your hard drive(s) alive based on time interval you choose. Free Open Source Mac Windows Linux Cross-platform Add a feature 1 Like