CoreTools - Plane Cut

Quick and easy bisect mesh with a plane. Ensure precision by built-in snapping!
If you're working with booleans where traditional tools like LoopCut often fail, the Plane Cut tool will greatly help you speed up topology cleanup process. 

Snapping:

Make cuts precise and accurate 

"World" mode:

Plane oriented to world

"Local" mode:

Plane oriented to object local rotation

"Edge" mode:

Plane oriented to edge under mouse cursor. Super quick way to make some cuts without the needs to set plane orientation by changings any settings

"3D Cursor" mode:

Plane oriented to 3D Cursor rotation. For any case where other modes will not provide desired plane orientation

"Camera" mode:

Plane oriented to camera view direction

"Selected Only" mode:

Limit cuts to selected geometry only