Sure, Inkscape does that. It's a vector library, but if you create a rectangle, the coordinates and dimensions are available for editing. Type in "N" and "M"

Sure, Inkscape does that. It's a vector library, but if you create a rectangle, the coordinates and dimensions are available for editing. Type in "N" and "M" and hit enter, and it updates, which makes sense, given that those values are linked to the underlying SVG.