Advanced Align View is a Blender add-on by 1P2D for aligning the 3D viewport to a reference point, aimed at precision modeling on complex geometry, CAD imports, and non-world-aligned objects. It's a fork of François Daubine's Align2Custom, extended by 1P2D with features built up around a personal modeling workflow before this release.
The add-on offers several align modes: Custom (legacy), 3D Cursor, Selection, and Advanced Edge Align. Selection aligns the view to the active object's orientation, or to selected geometry in Edit Mode. Advanced Edge Align works in Edit Mode with one edge selected, aligning the view so the edge sits parallel to the screen border with three degrees of freedom. Smart Align detects the closest matching angle when you roughly point the view in a direction, and Minimize Viewport Roll preserves the viewport's up orientation when aligning to a canonical viewpoint.
Pie menus and keyboard shortcuts drive the workflow, with navigation operators for incremental rotations around the aligned object. Optional settings can set the Transform Orientation to "View" and align newly added objects to the current view. It's stated as ideal for hard surface, industrial and automotive modelers.