What are some alternatives?
When comparing Softaken Gmail Backup Pro and AOMEI PXE Boot, you can also consider the following products
Gmail Backup - Backs up and restores email from your Gmail account
ERPXE - ERPXE project simplifies the process of installing and customizing a Multi-Boot PXE server.
Gmvault - Backup the emails in your Gmail account.
Tiny PXE Server - Small portable standalone PXE server (dhcp+tftp+http)
Got Your Back - Got Your Back (GYB) is a command line tool that backs up and restores your Gmail account.
FOG Project - A free open-source network computer cloning and management solution