What are some alternatives?
When comparing Start Menu X and Start Menu Reviver, you can also consider the following products
Classic Shell - Classic Shell was developed for Windows 8 since that was the first version of the popular operating system to forgo the iconic Start menu.
StartIsBack - StartIsBack returns Windows 10 and Windows 8 a real fully featured start menu and start button, behaving exactly like the ones in Windows 7. It's totally awesome and easy solution for your new Windows woes.
Open Shell - Open Shell is a fork of the Classic Shell project for Windows that getting back the classic start...
Start10 - Start10 adds the familiar Windows 7 start menu experience to Windows 10.
Start8 - Start8 returns the familiar Start menu to Microsoft's latest Windows 8 operating system.
Power8 - Start menu replacement for Windows