The variability model notation is a notation which has been proposed by Klaus Pohl and provides elements for modelling variability in SW products.
finnlabs developed another set of FMC Block Diagram stencils as the Fundamental Modeling Concepts (FMC) constitutes a solid base for every day communication, no matter whether within the engineering team or with clients or partners.
A set of colored boxes.
Another easy and light data flow diagram
The IDEF0 Functional Modeling method is designed to model the decisions, actions, and activities of an organization or system. This is a stencil to help you out IDEF0 modeling in OmniGraffle. Please send emails with your suggestions. Enjoy it!
For prototyping Eclipse dialogs and controls
Stencils to create eEPK diagrams. eEPK are used to do process modeling. For details about eEPK see wikipedia * http://en.wikipedia.org/wiki/Event-driven_process_chain (English) or * http://de.wikipedia.org/wiki/EEPK#erweiterte_Ereignisgesteuerte_Prozesskette_.28eEPK.29 (German)
Simple hand-drawn UML stencil.
Feature Diagram stencil, notation based on the book "Generative Programming" by K. Czarnecki and U.W. Eisenecker. Updated, version 2 improves quality (circles do no longer overlap connected boxes).