Boat Plans OnLine, a nicely laid-out page with plans arranged by type and length, with a color artist's rendering of each. Included are weights of finished boats.
Plyboats is a $145.- drafting program that will generate the lines needed to make patterns for a plywood stitch-and-glue boat. There's a review of it and another, more expensive program called Pro Basic, beginning on page 108 in the March/April '98 issue of WoodenBoat magazine.