Flow Selection Pro combines gestures, topology and live preview on a single button in Blender. The direction of an empty-space drag chooses Box, Lasso or Circle without picking a tool, and the modifiers work live while you draw. Box comes from dragging down past the ring, Lasso from dragging up, and Circle is a real brush you resize with a double left click. The same button also handles single-click and double-click selection and Tweak, which moves an element by dragging it, and it behaves the same on mouse, pen or trackpad.
In Edit Mode the drag direction reads the mesh topology, covering loops, rings, shortest paths, coplanar regions, checker patterns and marked edges. Gestures include Loop, Shortest Path, Coplanar flooding, Checker Deselect, Loop-Span, Boundary Loop, Marked-Edge and Marked Island, with everything previewing live and committing on release. This topology intelligence carries through ngons and broken topology where native selection gives up.
Single- and double-click behaviour is configurable per mode in Preferences, including click-to-toggle. You can clear a selection directly on the model, and an on-canvas readout shows your select mode and counts, warning when part of the selection has scrolled off-screen so hidden geometry isn't changed silently.