Take a weekend, and make something: that’s the challenge behind the Music Hack Day, which joins a growing phenomenon of events built around collective creation. (CDM held its own tangible interface hackday online, which I definitely hope to follow up soon!) Initiated by Dave Haynes of music sharing service Soundcloud, the Hack Day has already hit London. Many of the events were Web app-based and focused on consumption rather than creation of music, but we also saw a chordal synth plug-in and beer bottle percussion instrument.

The Berlin Hack Day, which wound up earlier today, offers still more projects focused on the creation side of music hacking. Having Ableton and Native Instruments as sponsors likely helped the mood. And as you’d expect from one of the world capitals of creative hacking, Berliners don’t disappoint.

Among the projects: a beautiful, elegant 3D sequencer, a fun bird-and-sky multitouch soundmaker with multitouch trackpad input, and a robotic xylophone controlled by monome. Someone even worked out a way to turn NI’s Maschine into a rhythm game, complete with Street Fighter sounds.

I’ve got some of my favorite projects here, but see also an eyewitness report (in English and Italian) at Audio News Room:
Just back from Music Hack Day Berlin
… and keep your eye on the wiki:
Berlin Hack Submissions

xylobot run by monome from robb on Vimeo.

Monomist Rob Böhnke and Ramsey Arnaoot created one of my favorite hackday projects so far: a monome-controlled robotic xylophone. The ingredients: one monome grid controller, one Java application for step sequencing to the output, one Arduino open source controller board, and one terrific xylophone “robot” made of an array of servos that strike the bars of the instrument. Oh, and some hot glue and wood, of course.

Project details

Debugging

Audio loop

Of course, what’s especially impressive is nailing this in just a weekend – imagine what they could do with more time and iterations.

Proof that musical visualizers don’t always have to be trippy, futuristic, Tron-like 3D landscapes (and that’s me speaking as a fan of such things), Gernot Poetsch instead chose a whimsical environment with clouds and cartoon birds, inspired by the graphic identity of Twitter. (No actual Twitter is involved, meaning you lose the, ahem, unreliable, buggy, unfiltered chat network but keep the cutesy happy sky! Works for me!)

The visuals are built in Quartz Composer, which via OSC transmits messages to synthesis language ChucK for noisemaking. The surprise is, the multitouch input is not a Lemur or an iPhone – it’s the new MacBook touchpad under Snow Leopard!

iLoveAcid is a beautiful-looking nodal sequencer by Jakob Penca which uses wireframe “tracks” to guide music playback through a sequencer, transmitting events to your soundmaker of choice via MIDI or OSC. By using curved timelines and connections, it’s a veritable model railroad of music, in which formations combine to form more complex structures instead of simply stepping across a grid. Despite appearances, it is so far only two-dimensional – but then, the z displacement could easily be assigned to some form of modulation. I’m really eager to see the video of this.

One ingredient: Processing, which makes it easier to write visual code and to connect to Java libraries.

Project Page

The hardware controller for Native Instruments’ Maschine software drum machine has been adapted to other software, like Ableton Live. But this is surely the first time it’s been made into a game. Using Maschine’s MIDI output as a game control and sounds from Street Fighter, MaschineFighter is a simple, Simon-style rhythm game. Unlike Simon, though, there’s a twist – instead of rote patterns generated in advance, you face off against a friend and try to out-rhythm each other, battle style. I think it’s actually a pretty brilliant idea, and could become a new sensation for us electronic music nerds – not to mention, it’ll finally test our rhythm in a way electronic performance often does not. (Correction: It is Mac-only, making use of the PYMIDI Objective-C based library, which, since everything else that starts with “Py” usually means Python – a la jThings that mean Java – I assumed, incorrectly, was built on Python. But anyway, if you like the idea, carry on! And, actually, having a pure Objective-C CoreMIDI interface is also pretty awesome.)

Hoping for a video of this, too.

If you have a project that didn’t make this list, or if you add documentation after the fact, let us know.

Performance with Cubie from sadmb on Vimeo.

Music sequencing as a Rubik’s Cube-style game, or hypnotic, kinetic rotating wheels – your piano roll won’t know what hit it. New musical art is set to be performed in Argentina, but you can download both tools, free.

Computer interfaces for music date back decades now, but with ingrained notions of hardware sound sequencers, linear media like tape, and hundreds of years of notation in staves and bars, old habits can be hard to kick. Yet it seems that suddenly, a younger generation of audiovisual composers is exploding notions of how musical interface and sequence could work, fully embracing a virtual space in which they themselves have come of age.

Next month’s spectacular-looking 404 Festival could make anyone want to book a flight to Argentina. Two highlighted artists from this festival for me really embody the possibilities of new sequencing metaphors. Both are built in Java.

At top, Cubie by Sadam Fujioka of Japan is free, downloadable software that combines audiovisual performance and game in a rotating cube.

Cubie is a software instrument which provides innovative idea of musical performance, differs from existing musical performance system such as musical notation, DJ systems, DAW systems, etc… It has a novel concept incorporating a new interactive technique based on puzzle games. Music is represented from highly saturated colored letters on a 3D cube. Almost unlimited number of melodies and rhythms can be created from a combination of those letters, and it can be changed on real-time by operations based on puzzle game. Those playful operations push a performer to play repeatedly and get the skill of performing with Cubie. Cubie is free software and you can play just like sadmb do.

More information in both Japanese and English at sadmb site (with lots of other software, as well). Built in Java with the use of JSyn for synthesis.

http://sadmb.com/

If these cubes feel overly rigid to you, though, and you don’t like the mechanical repetition of these lines, enter the crazy, spinning world of Hiroshi Matoba.

Hiroshi Matoba: OVERBUG from antjeverena on Vimeo.

Overbug is a music-performance tool designed to compose Minimal and Dance Music.

Through looping and newly arranging sound patterns, called ‘Bugsounds’, the program creates complex, polyrhythmic sounds. Overbug differs from conventional linear controlled music sequencers, which arrange the sound into a linear timeline from left to right. In Overbug the sound arrangement of the repeating music loops is equal to the visual abstraction of circular actions which built the interface through circles.

I showed a very early sketch I was working on last year of a circle-based sequencer, also built in Processing, though (cough) my chops are nowhere near Hiroshi’s. I was more interested in using the circles to subdivide cycles, as in Indonesian music. Seeing this piece is a major kick in my pants to try to work on my project a bit more and go a different direction.

Here’s a demo video explaining how this works:

More information + free download (just updated this month):
http://www.dominofactory.net/Overbug/

If You’re in Argentina

Don’t miss a terrific-looking exhibition of Japanese works and the rest of the
http://www.404festival.com/
(info in Spanish + English)

These two works clearly belonged together, but I feel bad for not featuring any Latin American (or Argentinian, specifically) work — those of you associated with 404, if you’ve got hot tips, send them in.

What if you could record directly online from a Web browser – no additional software needed? It’s not a new idea, but online music community Indaba has an interesting new Java-based tool that gets one step closer. We took a first look at the tool last month, but it’s now publicly available at indabamusic.com today. Indaba shared with CDM some video walking us through the feature set, and the company founders also answered some of my questions. For the musicians in the audience, we’ll have some more hands-on time with this tool to see if it’s something you can use. (My guess is, it’s something you might use alongside your existing tool of choice.) For the developers and Java fans (or skeptics), I also want to dig a little deeper in the Java and JavaFX platforms behind the scenes.

What can you do when making music in a browser?

• Work online or offline.
• Record directly online and share immediately.
• Work across platforms, directly in the browser.
• Add real-time effects, mixing, and even multitrack automation for adjusting levels.

Indaba isn’t alone in some of these features, but the ability to have high-performance, non-destructive audio effects and to record directly into the program without the typical browser restraints is definitely a step forward from other solutions.

Pricing will include a relatively full-featured free plan, plus $5/mo and $25/mo tiers adding additional clips, online storage workspace, and real-time non-destructive effects. (Video sharing service Vimeo recently adjusted their free/Pro distinction, a subject Jaymis covered for Create Digital Motion yesterday.)

Here’s our own Q&A to get things rolling:

CDM: Obviously, we have readers who are very comfortable with some existing, non-browser-based tools. But I can see them having a place for a browser tool as a supplement. How might some of those kinds of people use Indaba, as you envision it?

Indaba: The Indaba console is fully integrated with our global community of musicians, so it’s much easier to share work and collaborate on mixes. Even if your readers currently use non-browser-based tools, the Indaba console enables them to work together seamlessly from any computer without having to transfer files from machine to machine. What’s more, because the Indaba console is web-based, it can capture inspiration that strikes when artists are on the road or otherwise away from their studios. For musicians who don’t currently use complex DAWs, the Indaba console can be even more – a turnkey solution for recording, editing, and mixing.

Why JavaFX? What specifically was possible with JavaFX versus, say, Flash – given that at least some basic DSP functions we have seen in Flash?

The real decision was to build a Java application. A signed Java app gives us the freedom we need to tap into client-side hardware (sound-card, hard drive etc) and the power we need to handle multiple non-destructive effects. Other client-side technologies simply can’t offer this level of access. JavaFX gave us the ability to develop a sexy interface that wouldn’t look/feel like the stereotypical java apps of yesteryear. Going forward, this will enable us to do some pretty amazing things.

Ed. – note, that generally answer leads to some follow-up, specific development questions I have regarding implementation on Mac, Windows, and Linux, so we can talk more about those details – feel free to pass along your own thoughts and I’ll see what I can learn.

CDM: It’s nice to see the Creative Commons license on the sample materials. Will there be ways for artists using Creative Commons to release their own clips / share their own loops?

Not in this release but shortly thereafter. For now there are hundreds of clips available to our members.

Will there be an API for other sites to hook into what Indaba users are doing / what they’re doing on the Java-FX-based editing platform?

It’s definitely something we’re planning on releasing at some point. At the moment, we have private APIs for corporate partners.

What are some likely workflows with the new tool? How does that differ from previous versions?

It cuts a tremendous amount of overhead out of the process and is a simple and quick way to capture your ideas in high quality. Previously you had to download tracks, record locally, bounce them out of your DAW and upload them to the site… Now you can pop open the Console, record in high quality and mix your song all within Indaba.

Stay tuned for more details. And, of course, Indaba does have some competition on the Web; it’ll be interesting to see how it all stacks up.

The beauty of using touch for controllers is flexibility. Sure, you give up tactile feedback – but you can also quickly make your own layouts, make touch controllers an ideal complement to your existing hardware gear (the stuff with physical knobs and faders and pads).

For that reason, we’re all eagerly anticipating an upcoming version of the awesome OSC-based iPhone/iPod touch controller, TouchOSC.

http://hexler.net/software/touchosc

The included layouts are already fantastic, with rotaries and virtual buttons and multi-faders and toggles and X/Y pads. But custom control would be even better. Creator hexler writes CDM with the latest:

The long-awaited update to TouchOSC that will allow for custom layouts has just been submitted for review to Apple,
so I hope that as soon as next week it will be available as a free update to all users on the App Store.

Together with this release (1.3) there will be a free editor application to visually design and upload layouts to the device. You can take a look at the last beta version I published if you want, there’s both Windows and OS X versions available, but I will also prepare a Linux version as soon as possible, of course without the new version of TouchOSC this is but a preview of things to come:

http://dev.hexler.net/touchosc/touchosc-editor-0.7-osx.zip
http://dev.hexler.net/touchosc/touchosc-editor-0.7-win32.zip
http://dev.hexler.net/touchosc/touchosc-default-layouts.zip

And nicely enough, the editor is built in cross-platform Java, which I think makes a whole lot of sense. (Go Java, Python, etc., rather than getting stuck in hard-to-port platform-specific stuff like Cocoa.)

Thanks, hexler! I don’t have a video of the new features yet, so instead here’s a nice novelty – the beginnings of a creation using the free SuperCollider (which runs OSC natively) in combination with TouchOSC to make a custom step sequencer. Should fuel other ideas, too:

Indaba Music, a community and suite of online tools for musicians, announced today they’ve revamped their online recording and production tool using Java and JavaFX. The result: a platform-agnostic, online interface that allows you to record music “directly to the Internet.” And the band Weezer is excited enough about it that they’re giving their official endorsement.

Indaba, along with some others, already had an online music production tool. The new version expands on that idea, allowing you to record audio signal directly online, and beefing up tools for mixing, editing, and looping. Just like tools like GarageBand, a pre-built set of loops is ready for people to quickly mock up songs.

With some help from Sun’s JavaFX technology, the browser/desktop barrier isn’t as noticeable. You get a graphical-looking interface that works the same anywhere, plus the ability to drag audio files to and from your desktop.

indabamusic.com

javafx.com

Interestingly, Weezer’s endorsement focuses on the fact that they don’t know how to use other music software. I have to admit some skepticism here – a lot of musicians I think are savvy enough to get to use creative new music software, and a lot of the basic functions of the Indaba software itself are straight out of tools like ACID and GarageBand. Nor do you have to worry about any JavaFX tool blowing away your REAPER, Logic, Live, Pro Tools… well, you know.

On the other hand, while this is basically just an ACID-style audio production station in the browser, I’m curious about what new applications might take advantage of in-browser collaboration that don’t look like existing audio tools. Maybe we’ll have specialized tools for working out specific ideas or sharing snippets in-progress. And there’s no question that building some tools in the browser makes sharing more immediate.

I’ll be talking to the Indaba folks and the JavaFX team a little bit about the technology, and with Sun in particular I’ll be sure to ask about some of the future potential here for other tools. If you have questions, let me know.

Handmade Music hits Brooklyn again Thursday night with a terrific lineup:

• Robotic gamelan instruments with the Gamelatron, created by Zemi17 and the League of Electronic Musical Urban Robots (LEMUR) – check the video above!
• Rescued PDAs and iPods making music, with the Linux-powered ReWare project (which even allows you to run Pd on an old iPod), by Hans-Christoph Steiner – expect a box full of handhelds making noise
• Gestural Android handheld music, as I demonstrate the possibilities of the Google Android platform and G1 phone for OSC
• The Arduino-based Hard/Soft synth, designed by Gijs Gieskes and built by MAKE’s Collin Cunningham

Full project details at:

http://handmademusic.noisepages.com/

How to participate:

Online! Wherever you are in the world, you can join our live video stream:

http://www.ustream.tv/channel/cdm-tv

Apologies: while a test of the connection had worked for us last time, network performance was inexplicably poor. We’ll try to work on a better solution for the future. It’s the challenge of relying on a connection other than your own.

Schedule:

7:00p Online chat with the creators

7:30p Public event starts

8:00p Performances + demos

You can also ask questions to our creators by leaving them in comments here, or the day of / during the stream by sending a Twitter message with hashtag #cdmtv. (Follow CDM on Twitter) We’ll have clips of the show available by Friday

In NYC:

FREE, at Brooklyn’s 3rd Ward, 7:30p Thursday. rsvp@3rdward.com or on Facebook

Directions

3rd Ward

Thanks to Pabst Blue Ribbon for the free beer, plus our co-organizers at MAKE, Etsy, and XLR8R.

Last-minute NYC-area projects! If you have a project you want to bring, we will have a PA, amp, and projector. We welcome those last-minute projects that manage to come together. Just bring it by and find me at about 7p.

In Your Neighborhood:

We have folks interested in starting up Handmade Music around the US and internationally. Sign up via Google Docs if you have any interest in helping organize (no commitment) and expect information in the next couple of weeks.

Once a month, CDM goes from its virtual state to a sort of augmented reality existence in Brooklyn. (In Williamsburg, no less, which has itself been augmenting itself into neighborhoods formerly known as Bushwick.) Tonight is one of those times.

If you’re in Brooklyn, you should come enter our physical dimensions so you can:

• make your own NoiseToy with Loud Objects’ Tristan Perich, and take it home for the low, low price of ten clams. (Dollars, though I think clams are actually worth more at the moment. I’ll eat the clams.)
• witness strange, wonderful things happen in the areas of audiovisual virtual reality and free, new sequencers for Mac and PC
• watch me make a fantastic musical Processing sketch work, shipped over the Interwires from Spain!
• hang out with us and discuss our other projects that don’t work (because, really, that’s part of the process

TONIGHT = 7:30 pm (drop by late if you must) = Brooklyn, here

If you are separated from Brooklyn by time and space, fret not. I’m working on a site that will start to document these projects, and we’re extending our geographical dimensions so that these events start happening in other cities / countries / continents (perhaps among the all-Firefox crowd in Antarctica, where I gather they use Linux as they actually are penguins).

Also, a lot of these hardware and software projects are available for your consumption — sometimes free (as in beer and freedom), so we can all share the love.

For instance, learn about / acquire a Noise Toy on the Noise Toy site!
http://www.loudobjects.com/kit/

But it’s my belief that the future of CDM really depends on the interplay between physical and virtual reality in all sorts of dimensions. That is, so long as in the process I don’t become unstuck from time. I’ve watched Lost / Doctor Who, and that often ends badly.

This Thursday night, if you’re in NYC, you’ll want to be in Brooklyn – and around the world, stay tuned as always to CDM.

Handmade Music projects will again explode into the nerdster party in Brooklyn, with more ways to get involved worldwide. The science fair-meets-music lounge event hits Thursday night, and this time, you can walk home with your very own noisemakers – no musical or electronic experience required.

Tristan Perich, composer, sound artist, inventor, and 1-bit music maker will be onhand from Loud Objects to share the Noise Toy kit. He’ll walk you through making one, talk about how it works, and we’ll make a little racket.

And once we get a few of those kits made, you’ll be welcome to join in an impromptu Noise Toy Ensemble!

If you fancy higher-fi, digital music and virtual reality, we’ve got you covered, too, with a whole bunch of software projects.

• Noise Toy workshop with Loud Objects / Tristan Perich: Learn how this cheap kit can make glitchy sounds like Bzzzzrrrreeeeepehkhkhkhhhhhhhk! Workshop + kits – make one for free, $10 suggested donation to take it home!
• Force fields: Pulsantes is pulsating musical sequencer software with interconnected rings and force fields generating rhythms, created by Spanish artist Jaime Munarriz. (Jaime can’t be there, so I’m bringing his work!)
• Nintendo instruments and organic musical chemistry: glitchDS is a free cellular autamaton-based musical sequencer, ported from Nintendo DS to PC/Mac – this and other sound toys by Bret Truchan.
• Artificial musical realities: jReality is a Java library for creating real-time interactive audiovisual apps in 3D, with fully three-dimensional sound and visuals, motion tracking, stereo projection, and more. Peter Brinkmann shows off the work of the jReality project, including his own sound components.
• Wireless Sound Objects by Eric Beug are the equivalent of a wire-free modular synthesizer, for improvisation, performance, and education.
• Free business-card kits for exploring basic sound circuitry from PAiA didn’t ship in time for last month’s event, but they’re here now — get your free kit while they last, then draw your own sound controllers with pencils!

Presented by createdigitalmusic.com with our friends at music trend-setters XLR8R.com, DIY bible makezine.com, and self-made marketplace Etsy.com

Hosted by artists’ facility and happening location 3rd Ward

7:30pm, Thursday, March 19 – FREE!
3rd Ward is located at 195 Morgan Ave., at the corner of Stagg St., in East Williamsburg, Brooklyn.
(near the Grand St L train)
Directions
RSVP: handmade@3rdward.com

More on the projects – and many of these are available online, so I’m still working on ways of holding virtual Handmade Music parties, too.

Noise Toy Kits

with Tristan Perich (Loud Objects)

Bzzzzrrrreeeeepehkhkhkhhhhhhhk! Build your own Noise Toy with this kit from electronic noise group the Loud Objects. Plug in your headphones and glitch out, or jack into an amp
and play it as an instrument. These kits come with a custom-printed circuit board, a noise generating microchip from their live performances, two buttons for modulating the sound, headphone jack and battery.

We’re asking for $10 parts if they keep the toy, and they’re welcome to just make them for free if they want.

We’ll jack in noise toys to the mixer for the end of the evening to make a Noise Toy Group Performance! Stick around (maybe have a couple of beers if that helps your Noise Toy technique).

Wireless Sound Objects

by Eric Beug

Wireless Sound Objects are like the modules of a modular synthesizer, exploded into individual physical objects that provide an engaging way to experience unique, collaborative, musical process. They exist as a variety of objects that either make sound or control the sound that other objects are making. These objects can interface with a computer, with other existing music hardware or be used as a stand alone system. They can be used for performance, recording composition, improvisation, and education.

Wireless Sound Objects

jReality: Virtual-Reality Audiovisuals

Sound for the jReality environment by Peter Brinkmann

jReality is a Java library for creating real-time interactive audiovisual applications with three-dimensional computer graphics and spatialized audio. Applications written for jReality will run unchanged on software and hardware platforms ranging from desktop machines with a single screen and stereo speakers to immersive virtual environments with motion tracking, multiple screens with 3D stereo projection, and multi-channel audio. I would like to present an overview of the capabilities of jReality as well as a discussion of its design, with an emphasis on audio.

jReality: http://www.jreality.de/

VisorLab: http://math.sci.ccny.cuny.edu/pages?name=VisorLab

GlitchDS to Roland TR-606 Sync Using Nintendo DS Trigger Mod from LifeInABox Productions on Vimeo.

glitchDS Comes to the PC + Mac

by Bret Truchan

This is Bret. ( I made glitchDS, repeaterDS, cellsDS, and Quotile-Sequencer). I’ve nearly complete with a cellular automaton MIDI sequencer written in Processing for the PC and Mac. It’s modeled after glitchDS. Same look, similar controls, etc. I made it mostly for myself but I’ll be releasing it free very soon. I read about your Handmade Music night and think it’s going to be great fun.

I’m bringing a netbook loaded with the new sequencer and a MachineDrum.

Pulsantes

by Jaime Munarriz

Pulsantes is a Processing work in progress. Simple pulsating objects generate rythms within their inner structure, visible by their coloured rings, and they are interconnected, sending messages to each other.

At the moment, messages stop/start other pulsantes. I’ve tried an slaving relationship, with a dominant imposing his own tempo to others when they move nearby.

The background acts as a force field. One idea, implemented at some of the sketches, is to alter the way the pulsantes react to this forces, being atracted or repelled. The performer can change this, converting the environment into an instrument. I plan to include wind, explosions, that you can control when performing with this system.

Check out this project (among others):
http://tagmagic.wordpress.com/

Our Handmade Music series continues this month on Thursday evening, 3/19, 7:30p at 3rd Ward in Brooklyn. Projects are open as always. Bring hardware. Bring circuit-bent stuff. Bring code and patches. Bring works you want to perform. Bring works that don’t work yet. Just, if you can, give us a shout to know what to expect. We have a PA, a mixer, a projector, and some space. It’s a party / science fair-style atmosphere, a chance to have a few beers and celebrate sound and noise with fellow geeks and the musicurious.

I’m particularly interested this month to see if anyone has Java or Processing-based works you want to share, as Sun’s CommunityOne East is in town, meaning lots o’ Java programmers. (Generally, they’re doing serious, work stuff like … um … servers and things. But that doesn’t mean you can’t show off your own, more unusual creations.)

More details of the lineup soon.

Call for Works, Direct Link [Google Docs]
Embedded form below:

Want to interact with your computer musically using physical objects and other fancy-schmancy, science-fiction-y interfaces? Don’t want to rely on Microsoft or wait until 2019? You’re in luck. It’s like Christmas for DIYers and interactive futurists.

Enter LusidOSC, a set of protocols, libraries, and useful code, and Trackmate, a clever and cheap-to-build system for tangible interfaces. Together, you’ve just got a bunch of tools to help you start playing with blocks — erm, experiencing new spatial interfaces.

• LusidOSC, the library maps “spatial input devices” – really, any tangible devices or sensors in the real world – to applications, like live music or live visuals. It uses the network-savvy OpenSoundControl protocol. The library is available now for Processing, with Java, Python, Flash, and C++ in the works.
• LusidOSC, the apps/code: a set of Processing utilities to get you started includes a basic example app, command launcher, playlist mixer, and a MIDI sequencer. You can build on these for your own Processing apps.
• Your own input device: Tags? Sensors? Markers? Regions? Fingertips? If it’s in physical space, you can map it via LusidOSC. Or, if you want a place to start, try:
• Trackmate: A project of MIT’s Tangible Media Group, Trackmate lets you affix tags to any objects you want and use them as an interface.

LusidOSC is just the protocol; it’s physical applications like Trackmate that get really interesting. In these economically-challenged times, Trackmate gives you tangible interfaces for next to nothing. All you need is a computer (Mac, Windows, or Linux), and a camera (even a webcam will do). Print out randomly-generated tags in the free and open source software, stick them on stuff you want to use, and go to town.

You can make your own Trackmate surfaces out of hardwood or plexiglass for as little as $40 in parts. There’s even a Processing-based simulator app so you can experiment without the physical objects. (Good for troubleshooting on the bus or plane, I imagine.)

Trackmate is just one project, though; LusidOSC promises to support other interface ideas, too.

LusidOSC at Sourceforge, the work of “many research institutions and companies.” (Which, I wonder?)
Trackmate at Sourceforge, a project of the MIT Media Lab Tangible Media Group

Alternatives: TUIO, the protocol used in the Bjork-endorsed Reactable project marches forward, as well. And as both projects are open source, there could be some cross-pollination. I hear a revised TUIO is coming, and in the meantime, LusidOSC acts as a gateway to TUIO.