Quad Cap Pro is a modifier plugin by Romanian developer Marius Silaghi that fills borders and N-gons with quad polygons unlike the normal Max cap tool, which produces one big N-gon. Quad Cap Pro is the successor of the Quad Cap script. It is now faster, has more features and can also cap N-gons with an uneven number of sides, producing quads and a single triangle. Owners of the Quad Cap script can upgrade to Quad Cap Pro for a reduced price. More at Marius Silaghi’s site.