Cleaner One Pro is the best Mac cleaner that can optimize memory usage and speed up your Mac . With the minimalist and easy-to-use interface, you can visualize, manage and free up your storage space in just one click. Cleaner One Pro also provides some advanced features including start up manager, application manager and file shredder. Keep your Mac clean and automatically tune it up for the best performance.
CleanMyMac X - Clean, protect and speed up your Mac
CCleaner - CCleaner cleans, speeds up and frees up space on business endpoints.
Fossils - Find and clean out all your old unused files
DaisyDisk - DaisyDisk is a disk analyzer tool for OS X that visualizes hard disk usage and allows to free up hard disk space.
Cybertron Privacy Eraser - 1-click browsing history deletion, PC optimization & more
Memory Clean - Super Powerful Memory Cleaning Utility for Mac