Popular stencils
Semantic Web Icons and Logos
A portion of the SVG icon sets from the W3C Semantic Web and RDF pages.
FlatBlock Wireframe Kit
An OmniGraffle stencil used to do "color block" wireframes. It includes the following parts: Basic Frames for web and mobile. Buttons Content Blocks Layout Components, like navigator, image placeholder, etc. Please go to https://github.com/cowfox/FlatBlock-Kit for examples and contribute.
ArchiMate: Information
This stencil is part of a set of ArchiMate stencils. ArchiMate is an enterprise architecture modelling language. Please note that to use the ArchiMate trademark commercially you also require an associated ArchiMate license.
Data Flow Diagram
Another easy and light data flow diagram
NetApp Storage (Legacy)
Stencil of Network Appliance Storage. Ideal for creating physical diagrams.
ArchiMate 2.0: Behaviour
Stencil for the ArchiMate modelling language from The Open Group. This is one of the four stencils comprising the core models for ArchiMate 2.0. This stencil specifically contains the behavioural concepts. For more information on ArchiMate, see the website of The Open Group.
Chemical Engineering 2
A basic stencil for chemical engineering diagrams (Stencil 2).
Markov chains
Simple self-looping arcs and two-way arcs with custom circles, to allow links and self-links with the correct angles and spacing. (16 radially spaced magnets per circle - two magnets at each of the four cardinal directions, and two at each of the multiples of pi/4 45 degrees).
F5 Networks - BIG-IP - Rack Friendly
BIG-IP 1600 3600 3900 4200 6900 8900 8950 11050 and VIPRION 2400/4400 Dan Strohl's Rack Friendly version