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



Features:

ĽNo system files patching;
ĽNo hooks over system objects;
ĽNo app-init DLLs;
ĽNo additional services, drivers, etc;
ĽNo trash in registry;
ĽNo installation - just unpack and launch;
ĽSmall, fast and powerful;
ĽOpen-source;

Go get it here.

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