http://windows.microsoft.com/en-US/windows-8/iso

Product Key: TK8TP-9JN6P-7X7WW-RFFTV-B7QPF Windows 8 iso

Windows 7 windows 8 installer

http://www.microsoftstore.com/store/msstore/html/pbPage.Help_Win7_usbdvd_dwnTool

Windows and linux installers

http://www.askvg.com/ultimate-collection-of-best-freeware-to-create-bootable-usb-drive-to-install-windows-and-linux/

Linux installers

http://www.pendrivelinux.com/