What is MyFreeCodec?
JRT (Junkware Removal Tool) is a free non-interactive batch
program created by thisisu
(a member of the BC Malware Response Team) that will remove many potentially unwanted programs (PUPs), adware, toolbars, browser hijackers, extensions, add-ons, browser helper objects (BHOs) and other junkware. JRT is designed to remove all traces of these types of programs which includes services, registry values, registry keys, files, folders and potentially unwanted extensions. JRT will also restore some default settings for Internet Explorer, Mozilla FireFox and Google Chrome. JRT automatically removes whatever it finds...there are no options to skip or ignore detections and no option to backup/restore removed items.
AdwCleaner is a free portable adware cleaner created by Xplode
(a BC Security Colleague) that will search for and remove many potentially unwanted programs (PUPs), adware, toolbars, browser hijackers, extensions, add-ons, browser helper objects (BHOs) and other junkware to include many related registry entries (values, keys). It will also clean FF and Chrome extensions and Add-ons. In some cases AdwCleaner may detect items related to legitimate programs...a search should always be performed first so the detections can be reviewed. When first run AdwCleaner includes options under the tabs to show what was found and to allow disabling detections you want to keep since not all detections are necessarily bad. The only things you can't uncheck is Chrome and Firefox preferences lines but you still can view them in the "Chrome" and "Firefox" tab.
PUPs do not fall in the same category as malicious files such as viruses, Trojans, worms, rootkits and bots. A PUP is a very broad threat category which can encompass any number of different programs to include those which are benign as well as malicious. To learn more about PUPs and how you get them, please read: About those Toolbars and Add-ons - Potentially Unwanted Programs (PUPs)