Here is how he puts it:

These gesture icons act as roadsigns to an app for interaction way-finding. As expected, there has been a significant collection of gesture icon sets that have been made available to fill this need. The current crop of icons succeed in clarity, but they lack the iconic qualities necessary to act as a standard representation of gestures. My goal is to help create a foundational set of icons that are flexible, clear and distilled to a point where they could become a standard visual system to build from – ultimately to be used within apps for when explicit communication is needed.

Credits: PJ Onori

From the Sketchify website, in Željko’s own words:

Sketchify (also known as AMICO Sketchpad) is a toolset for sketching of novel classes of user interfaces, originally developed by Željko Obrenović at the Concept Lab of the Eindhoven Technical University. Sketchify extends the concept of paper and pencil sketching to a more generic concept of rapid manipulation of interaction material. Interactive material is any piece of software/hardware that represents or simulates a part of user interactive experiences, such as inputs from sensors, output of audio tools, interaction with Web services, or simple drawings. Through manipulation of interactive materials, designers create “interactive sketches”, which in rough terms illustrate interaction scenario or interaction techniques. Our tool gives a designer freedom to combine elements of traditional freehand sketching and with numerous extensions, such as end-user programming (spreadsheets and scripts), and links to existing software functionality.

Credits: Željko Obrenović

Today’s popular prototyping tools for the most part rely on a similar approach to handling interactivity, which might be a bit stale. There is a large focus on trying to predict all possible interactions in advance and prerecording event handlers (such as onclicks and mouseovers) ahead of time. I find SketchWizard on the other hand provides a more spontaneous way of playing out interactions with a prototype. While it alleviates the need to have everything thought out before hand, the one catch might be that the user has to occasionally wait a few seconds longer before a new screen comes into view (as the designer is preparing it quietly on the other end). Perhaps it would be interesting to see more prototyping tools take on this approach as well.

There are binary releases and videos available right there on the project page.

Credits: Richard C. Davis, T. Scott Saponas, James A. Landay

Grab the files (and collaborate) right here.

In Colin’s own words:

I’m working on some a free wireframing toolkit for creating interactive prototypes with Apple’s Keynote. It’s the best wireframe tool around, and I’ve been using it to build interfaces for web applications.

Credits: Colin Nederkoorn

Have a peek at the demo or fork the code at github.

Credits: Jakub Linowski

A cool idea, but there is a small catch. If I understand correctly, the whole thing is still waiting to get approved to the App Store and there is some uncertainty if it will or not get accepted. Either way, the code is also open sourced and should be available on git hub, so at least it should be available for internal development purposes. In Rob’s own words:

The Briefs toolkit was created for rapidly building & iterating design concepts. It allows one to quickly prototype those concepts and run them on iPhone OS devices. These prototypes run directly on the phone, like actual apps, but require much less time and code to produce than a prototype built using only the native APIs. Less code means faster design cycles followed by more a efficient development cycle.

Find out more at giveabrief.com.

Also, I just created the gestures tag to keep track of all these related posts.

Credits: GestureWorks

I still haven’t tried out this tool on a real UI design project, but the concept is definitely inspirational and so I thought to share it. The K-Sketch project opens up the possibility and idea of sketching in the context of a timeline, which I think is quite novel in itself. If the desire of designers to express interactions seamlessly with the use of animation is strong enough (which I think it is), my guess is that we’ll be seeing more and more of functionality such as this in our prototyping tools of the future.

Download it and try it out yourself.

Here is another explanation straight off from their website:

K-Sketch allows ordinary computer users to create informal animations from sketches. Current tools for creating animation are extremely complex. This makes it difficult for designers to prototype animations and nearly impossible for novices to create them at all. Simple animation systems exist but severely restrict the types of motion that can be represented. To guide the design K-Sketch, we have conducted field studies into the needs of professional and novice animators. These studies showed the wide variety of motions that users desire in informal animations and indicate how to prioritize these types of motion. Our design allows the most important types of motion to be defined with pen gestures, and gives visual feedback for coordination of events.

Credits: Prof. Richard Davis

The Animationizer makes stop-frame animations quickly and easily using a webcam. I put it together to help make early prototypes for user experience design projects I’ve been working on. It might also be useful for art projects or science experiments – or maybe just to keep the kids occupied on a rainy afternoon.

For installation, basically you need to install Processing first and then download the code from his website. For those users on Windows, you might also need the WinVDIG for QT driver.

Another pretty cool feature is the Clipart Browser. The Pencil allows you to search the open directory over at clipart.org and insert SVG graphics straight into your mockup. Love it. :) Other than that, one minor area which could use some improvement is the handling of a group of items or reusing them across screens. Quite often UI tools either come with some sort of grouping or master functionality which seems to be missing here.

Give it a spin right here.