Popular stencils
Free
Floorplans: Appliances
A handy collection of appliances for laying out basic floorplans.
Free
Chemical Engineering 1
A basic stencil for chemical engineering diagrams (Stencil 1).
Free
Flow callouts
Rounded rectangular callouts with semi-transparent gradience.
Free
Class Responsibility Collaborator (CRC)
Class Responsibility Collaborator Models.
Free
3D input tetrahedron
Simple shapes
Free
Teasers (Magnolia CMS)
Single Teaser Paragraphs stencil from the Magnolia CMS Standard Templating Kit (STK) Stencil kit.
Free
NetApp Storage (Legacy)
Stencil of Network Appliance Storage. Ideal for creating physical diagrams.
Free
Whiteboard Icons for Distributed System Design
Whiteboard style icons that can be used to draw Distributed System design diagrams. T
Free
AWS Database Icons
AWS Simple Icons for Architecture Diagrams from http://aws.amazon.com/architecture/icons/ converted to stencils.