Mobile Design Elements
Templates & Stencils
These are graphic items you can import to various drawing programs (mostly the Adobe suite) to create designs and mockups. The organization may confuse you a bit. Up top are people (like us!) who give lots of different templates, and generic ones. Then I list them by platform, because way too many people are making a single set of Photoshop tools for the iPad, et. al.
Note that this is just those we've found, or found useful. Many more are likely stuck in the various manufacturer and OS developer links under UI Guidelines below.
Also, we do not use raster tools for wireframing, or even OmniGraffle much. Most of these are not reviewed, just listed. If dumb, or incorrectly categorized, please fix it.
4ourth Mobile
A bunch of mobile components (and some other info, like typography) for general mobile design, as well as gestures, and even iPhone specific stuff for the fanbois. Includes the templates used to make the illustrations and diagrams for this wiki. Last updated 21 October 2010:
If you are still on Freehand (and we salute you) the old (September 2009), not-at-all-updated version is still available. It has Little Springs branding, as that's who Steven worked for when he made it.
Yahoo!
Yahoo! Stencil Kit many non-mobile parts, but also useful general and iPhone bits and pieces.
Nokia, Et. Al.
Includes Symbian Foundation, and so forth. Even though some of those are not really 100% Nokia.
Nokia Mobile Design Patterns Not really the same thing, as they are just articles, not actual things to use for drawning. If someone thinks it needs to go somewhere else, move it.
S60 Wireframing Stencils S60 (through 5th edition) elements of all sorts.
Graffletopia
Mobile UI Stencils (Omnigraffle)
Mobility
Mobility A free set of mobile UI design elements. I haven't looked, so it could be lying and only be iOS. Someone move it or tell me if it's not generic. (.psd)
Squetch
Wireframe Sketching Kit with tools for Browser, iPad upright, iPad landscape, Smartphone, GUI-Elements and Form-Elements. Not sure what some mean, but I guess "Smartphone" means they are trying to not just be iOS, so they get a category. (Illustrator)
iOS
iPhone, iPod Touch and iPad
Library of iPhone UI Elements Photoshop library of iPhone-specific elements only, from Teehan-Lax. Updated occasionally, so if you see a new one, please update the link for us. (Photoshop)
http://www.teehanlax.com/blog/2010/08/12/iphone-4-gui-psd-retina-display/ Same as above but for the iPhone 4 resolution instead. (Photoshop)
iPhone UI Kit Lots of UI widgets like switches, buttons, etc. (Photoshop)
Another Libtary of iPhone4 UI Elements Based on the Teehan-Lax work above, but presumably different in some way. (Photoshop)
Vector Wireframe Templates for iPhone (Illustrator)
iPhone 4 HD Another one, not sure who made it or if it's fresh or a derivation of the Teehan-Lax stuff again. (Photoshop)
iPhone Wireframe Kit In, of all things, Google Docs. Haven't tried it, but I really need to.
iPad Template Preview only has the frame, so not sure what is included. (Photoshop)
iPad Wall Presenter I think just the frames with guides to put backgrounds and designs into. (PNG and Photoshop)
Sketching the iPad to encourage sketching, even as far as to print empties and use your mad Sharpie® skills. From Zurb (OmniGraffle)
Android OS
All versions, all platforms, all operator overlays. When someone makes Google TV stencils, they'll probably be here also.
Library of Android UI Elements from Smashing Magazine. Photoshop library of Android (default) elements only. (Photoshop)
Android 2.2 Elements based on the Smashing Magazine work. (Photoshop)
http://www.webdesignshock.com/freebies/free-photoshop-android-interface-gui/ which has a lot of UI widgets, and includes the typography needed to make it all work.(Photoshop)
Icon Design Guidelines, Android 2.0 from Developer.Android.com. Includes ways to download their template pack and other useful stuff. Quite detailed for the graphic designer, for a change. (Photoshop)
14 Android GUI Widgets by which they seem to mean default desktop widgets (e.g. clock), vs. UI widgets like scrollbars. (Photoshop)
HTC HD2 PSD Vector150 layers, 60 groups, almost all vector. (Photoshop)
HTC G2 370 layers, almost all vector, (Photoshop)
Motorola Droid 2350 layers, almost all vector (Photoshop)
Samsung Galaxy S Device not specified. 127 layers. (Photoshop)
Samsung Galaxy Tab P1000 110 layers. (Photoshop)
http://www.zurb.com/playground/honeycomb-stencils Android Honeycomb tablet preview components, sketch sheets, etc. (based on screenshots, emulators, etc, so not final). From Zurb (OmniGraffle)
UI Guidelines
Documentation, forums, lists and other methods device and OS makers use to communicate their UI guidelines. These periodically move, so if you see a broken link, please update it.
Templates and stencils, even from these people, will be listed above where known.
Android (from Google and OEMs)
Apple iOS
Microsoft Windows CE, Mobile & Phone
Nokia Family (S40, S60, Symbian, MeeGo)
S60 Visualization and Graphic Design Guideline PDF from here
Palm WebOS
RIM Blackberry
Samsung Bada
Sony Ericsson Featurephones
Drawing Tool, Tips & Tricks
Just a list that we keep for ourselves, so we don't forget things. Feel free to add items, or even categories, if there's a tool you want to share your notes about.