Memory Defragmenter - Version 1.1 ABEXO Memory Defragmenter, also called RAM defragmenter, RAM/memory booster, RAM/memory optimizer, etc. is a software to free up wasted RAM and report the free memory. Memory Defragmenter also prevents Windows crashes since Windows crashes mainly occur if there is no free memory (RAM). You can configure Memory Defragmenter to automatically free memory when the amount of available RAM falls below a certain value.