We’ve covered various new ways that frequent flashers can back up their applications without using applications like Titanium Backup or MyBackup Pro. However, while the alternative methods may work better in some regards, they just can’t replace the classics in all situations. There is a new method on the HTC Desire HD that looks very promising, though.
The method is known as the Flashaholics Essential Pack. Put together by XDA Senior Member strawmetal, the Pack uses AROMA Installer to allow users to install a plethora of popular applications when flashed in a custom recovery. This, much like the App2Zip program linked above, is flashed right after a ROM flash, so apps are installed before the ROM even boots for the first time.
For now, the Flashaholics Essential Pack is a little light on the goods. It includes a very decent number of applications—including GAPPS—but aside from GAPPS and essential utilities, there isn’t much else. Thus, you’ll still need to use other applications to restore your other apps. That may not be the case forever, as strawmetal has stated that there will be a tutorial written to help users customize their own Pack to install after ROM flashes. However, it is important to note that even if this is done, app data will not be backed up or restored.
For more details, check out the original thread.
[Thanks to XDA Senior Member androidindian for the tip.]