DiskGenius Pro is available as a free download from our software library. (old PartitionGuru) This is a very useful, easy to use application specially designed to offer users a partition management and data recovery software.
Demo: http://www.eassos.com
Hard Disk Sentinel Portable is a popular program for monitoring and controlling the health of hard drives. Allows you to identify potential problems, performance degradation and possible failures.
Demo: http://www.hdsentinel.com
Auslogics Disk Defrag Ultimate Portable is a program for defragmenting your hard drive at a professional level.
Demo: https://www.auslogics.com/software/disk-defrag-pro/