Interface & Features
The GUI of Free Malwarebytes is logically organized, but not very esthetic. Menus, with little configuration options, are found in tabs.
On the scanner tab, you find Quick Scan and Full Scan, which speak for themselves. Flash Scan checks for memory-resident malware and automatically started programs in autorun. This and many other features cannot be used with the trial edition.
This, for instance, is the case for real-time protection, which you find on the next tab. The next useful “free" tab is Logs, where you supposedly find results from scanning and items detected during runtime. Then, on the Ignore tab, you can whitelist trusted applications.
It is worth noting that the Settings tab contains an activated checkbox stating that you want to report usage statistic to malwarebytes.org anonymously, and the Tools tab includes FileASSASSIN, a utility that deletes any type of locked files.
We are not sure how capable Malwarebytes Anti-Malware really is. There is too little information and little can be configured.