UMLGraph
draw.io
Dia
LucidChart
yEd
OmniGraffle
UMLet
CollabNet
optiCutter
CutList Optimizer
Cutlist Plus
WorkshopBuddy
Optimalon
Cut Optimizer
Cutlist Evolution
MaxCut
UMLGraph
optiCutterdraw.io - Online diagramming application
CutList Optimizer - A free cutlist optimizer
Dia - Dia is a GTK+ based diagram creation program for GNU/Linux, MacOS X, Unix, and Windows, and is released under the GPL license.
Cutlist Plus - Cutlist Plus is an excellent layout management platform that allows to create highly optimized shape-based content for websites or applications with cutting diagrams like rectangular, triangular, square, or multiple dimensional interfaces.
LucidChart - LucidChart is the missing link in online productivity suites. LucidChart allows users to create, collaborate on, and publish attractive flowcharts and other diagrams from a web browser.
WorkshopBuddy - A professional cutlist optimizer to calculate efficient layouts on linear & sheet material. Commercial workshops generate significant savings & reduce waste.