CrystalDiskInfo - is a small utility to monitor the status of hard drives, monitors the status of hard drives that support SMART technology Monitors and provides an overall assessment of "health" of your drive.
Internet Download Manager has a smart download logic accelerator that features intelligent dynamic file segmentation and safe multipart downloading technology to accelerate your downloads. Unlike other download accelerators and managers that segment files before downloading starts, Internet Download Manager segments downloaded files dynamically during download process.