Popular stencils
Bantik UML
Because UML doesn't have to be black and white... Version 2 turns the 'object' object into a table, making adding an attribute, method, or private method as simple as command-enter.
Rounded Numbers
Why clutter up your diagrams with a lot of text when the most used way of annotating diagrams is by using a number or a letter inside a circle? Very useful when needing to annotate diagrams, drawings, or photographs.
Annotations
A set of annotations for photographs and diagrams inspired by the excellent annotations available in Little Snapper from RealMac Software.
Touchscreen Hand Gestures
A collection of drawn hands for documenting touchscreen interactions. Includes point, tap, pinch, spread, drag.
Web Form Elements
Edward Anastas has put together a handy stencil composed of often-used elements in HTML and web page forms: radio buttons, checkboxes, combo boxes, entry fields and text areas. Nice looking and Aqua, to boot.
OS logos
A collection of OS/hardware logos, including Sun, HP, Linux, Red Hat, FreeBSD, Windows, Debian, Darwin, IBM, and VMware.
Pretty Urban Building Icons
A collection of icons of urban buildings
elwebUI Web wireframe kit
This is the stencil I created over the past three years of making wireframes every day. They save me a bunch on time and I thought the best thing was to share it. All elements are made with vectors inside of OmniGraffle. PDF exports are very small (file size) and resolution independent. You can zoom in as much as you want...more
Django Admin
Stencil featuring the out-of-the-box UI elements available when creating admin interfaces for Django sites.