Power 8 is another start menu replacer for Windows 8, styled and integrated inside taskbar.





Features:

•No system files patching;
•No hooks over system objects;
•No app-init DLLs;
•No additional services, drivers, etc;
•No trash in registry;
•No installation - just unpack and launch;
•Small, fast and powerful;
•Open-source;

Go get it here.

More free apps to add start menu and start button to Windows 8 here.