Most of these tools are accessed via keymaps, that can be adjusted in the addon preferences. Others are accessed via the object or edit mode context menus.
Smart Drive and Unity Export are accessed from the 3D View's sidepanel, while Cursor Spin is found in the Extrude menu.
Smart Vert
Smart Edge
Smart Face
Surface Slide
Clean Up
Clipping Toggle
Focus
Mirror and Un-Mirror
Align
Apply Transformations
Select
MeshCut
Filebrowser tools
Smart Drive
Unity Export
Material Picker
Group tools
Add Thread
Cursor Spin
Customize
Pie Menus
Pie menus in MACHIN3tools, typically provide a whole set of new custom tools themselves, they are not just a re-arrangement of native Blender tools.
These tools are not mentioned above, but there are dozens of them. The Cursor and Origin pie is a great example, but it's similar for most other menus.