MediCat USB - A multiboot Linux USB and Win10PE_x64 for PC Repair.
NTLite - The Ultimate Windows Customization Tool
Hirens BootCD - Hirens BootCD is a powerful, all-in-one boot disk utility that will help you resolve and make reformatting your computer easily.
Win Toolkit - BUGS: Do not post bugs in the comments.
AOMEI PE Builder - Free tool to create bootable USB drive, CD/DVD or ISO file based on Windows PE.
Ultimate Windows Tweaker - Ultimate Windows Tweaker is a freeware Tweak UI Utility for tweaking and optimizing Windows.