ShivaTools: ViewNavi is a macro that enhances viewport navigation in 3ds Max, letting you use all views with fewer hotkeys. Instead of assigning a separate key to every view, it maps three actions that you bind to keys such as F, T and L.
The macro cycles views on repeated taps of the same key. The first tap of the assigned key sets the Top view, the second switches to Bottom, and so on. Installation involves copying the ShivaTools_ViewNavi.mcr file into your user_macros folder, then opening Customize > Hotkeys Editor, searching for ViewNavi, binding the three actions to keys such as F, T and L, and saving your hotkey preset.
ViewNavi is compatible with 3ds Max 2015 and later. It comes from Shiva, a 3D artist with over 20 years of experience in 3ds Max across architectural visualisation, advertising, music videos and props for movies and games.