LUFA is currently in use all around the world, in many applications both commercial and non-commercial. Below is a list of known public LUFA powered projects, which all use the LUFA library in some way. Feel free to visit each project's home page for more information on each project.

If you have a project that you would like to add to this list, please contact me via the details on the main page of this documentation.

AVR-USB Development Boards Using LUFA

The following is a list of known AVR USB development boards, which recommend using LUFA for the USB stack. Some of these are open design, and all are available for purchase as completed development boards suitable for project development.

AVR-USB-162, a USBKEY-like development board for the AT90USB162: http://olimex.com/dev/avr-usb-162.html
Benito #7, a no-frills USB board: http://www.dorkbotpdx.org/wiki/benito
JM-DB-U2, an ATMEGA32U2 development board: http://u2.mattair.net/index.html
Micropendous, an open design/source set of AVR USB development boards: http://micropendous.org/
Microsin AVR-USB162 breakout board, a DIY AT90USB162 development board: http://microsin.ru/content/view/685/44/
Minimus USB, a board specially designed for PSGroove: http://www.minimususb.com/
Nanduino, a do-it-yourself AT90USB162 board: http://www.makestuff.eu/wordpress/?page_id=569
Sparkfun ATMEGA8U2 breakout board: http://www.sparkfun.com/products/10277
Teensy and Teensy++, two other AVR USB development boards: http://www.pjrc.com/teensy/index.html
U2DIL/U4DIL, a set of DIP layout USB AVR boards: http://www.reworld.eu/re/en/products/u2dil/
USB2AX, a tiny USB to serial converter board: http://paranoidstudio.assembla.com/wiki/show/paranoidstudio/USB2AX
USBFOO 2, AT90USB162 based development board: http://shop.kernelconcepts.de/product_info.php?products_id=102

Projects Using LUFA (Hobbyist)

The following are known hobbyist projects using LUFA. Most are open source, and show off interesting ways that the LUFA library can be incorporated into many different applications.

Accelerometer Game Joystick: http://www.crictor.co.il/he/episodes/joystick/
Arcade Controller: http://fletchtronics.net/arcade-controller-made-petunia
Arcade Joystick: http://jamie.lentin.co.uk/embedded/arcade-joystick/
AVR USB Modem, a 3G Wireless Modem host: http://code.google.com/p/avrusbmodem/
Bicycle POV: http://www.code.google.com/p/bicycleledpov/
Bluetooth Explorerbot: http://code.google.com/p/bluetooth-explorerbot/
Bus Ninja, an AVR clone of the popular BusPirate project: http://blog.hodgepig.org/busninja/
CAMTRIG, a remote Camera Trigger device: http://code.astraw.com/projects/motmot/camtrig
CD Driver Emulator Dongle for ISO Files: http://cdemu.blogspot.com/
ClockTamer, a configurable clock generator: http://code.google.com/p/clock-tamer/
Collection of alternative Arduino Uno firmwares: http://hunt.net.nz/users/darran/
Computer controlled LED matrix (Russian): http://we.easyelectronics.ru/AVR/nebolshoy-primer-s-lufa-hidapi.html
CULFW, a 868MHz RF packet encoder/decoder: http://www.koeniglich.de/culfw/culfw.html
Dashkey, a custom PC keyboard controller: http://geekhack.org/showwiki.php?title=Island:19096
DIY PS3 controller emulator: https://code.google.com/p/diyps3controller/
EMuSer, a USB-RS422 adapter for E-Mu samplers: http://www.emxp.net/EMuSer.htm
Estick JTAG, an ARM JTAG debugger: http://code.google.com/p/estick-jtag/
"Fingerlicking Wingdinger" (WARNING: Bad language if no Javascript), a MIDI controller: http://noisybox.net/electronics/wingdinger/
Flyatar, a real-time fly tracking system: https://github.com/peterpolidoro/Flyatar
Gamecube controller to USB adapter: https://www.facebook.com/media/set/?set=a.10150202447076304.310536.688776303&l=df53851c50
Garmin GPS USB to NMEA standard serial sentence translator: http://github.com/nall/garmin-transmogrifier/tree/master
Generic HID Device Creator: http://generichid.sourceforge.net/
Generic HID Open Source Framework: http://www.waitingforfriday.com/index.php/USB_Generic_HID_Open_Source_Framework_for_Atmel_AVR_and_Windows
Ghetto Drum, a MIDI drum controller: http://noisybox.net/art/gdrum/
Hiduino, a USB-MIDI replacement firmware for the Arduino Uno: http://code.google.com/p/hiduino/
Ikea RGB LED USB modification: http://slashhome.se/p/projects/id/ikea_dioder_usb/#project
IR Remote to Keyboard decoder: http://netzhansa.blogspot.com/2010/04/our-living-room-hi-fi-setup-needs-mp3.html
LED Panel controller: http://projects.peterpolidoro.net/caltech/panelscontroller/panelscontroller.htm
Linux Secure Storage Dongle: http://github.com/TomMD/teensy
LUFA powered DDR dance mat (French): http://logicien-parfait.fr/dokuwiki/doku.php?id=projet:ddr_repair
MakeTV Episode Dispenser: http://www.youtube.com/watch?v=BkWUi18hl3g
MidiMonster, a USB-to-MIDI gateway board: http://www.dorkbotpdx.org/wiki/midimonster
MIDI Theremin: http://baldwisdom.com/usb-midi-controller-theremin-style-on-arduino-uno/
MIDI interface hack of a toy Guitar: http://blog.x37v.info/2011/06/26/toy-guitar-hacked-midi-conroller
MiniBloq, a graphical Ardunio programming environment : http://minibloq.org/
MiXley, a port of the Teacup 3D printer firmware for the USB AVRs: http://codaset.com/michielh/mixley
Mobo 4.3, a USB controlled all band (160-10m) HF SDR transceiver: http://sites.google.com/site/lofturj/mobo4_3
Moco, a native Arduino Uno MIDI replacement firmware: http://web.mac.com/kuwatay/morecat_lab./MocoLUFA.html
Motherboard BIOS flasher: http://www.coreboot.org/InSystemFlasher
Multi-button Joystick (French): http://logicien-parfait.fr/dokuwiki/doku.php?id=projet:joystick
Music Playing Alarm Clock (Tutorial): http://www.instructables.com/id/Music-Playing-Alarm-Clock/
NeroJTAG, a JTAG dongle: https://github.com/makestuff/neroJtag
NES Controller USB modification: http://projects.peterpolidoro.net/video/NESUSB.htm
Nikon wireless camera remote control (Norwegian): http://hekta.org/~hpe1119/
Opendous-JTAG, an open source ARM JTAG debugger: http://code.google.com/p/opendous-jtag/
Openkubus, an open source hardware-based authentication dongle: http://code.google.com/p/openkubus/
Orbee, a USB connected RGB Orb for notifications: http://www.franksworkshop.com.au/Electronics/Orbee/Orbee.htm
Programmable keyboard controller: http://41j.com/blog/2011/10/a-programmable-keyboard-controller/
Programmable XBOX controller: http://richard-burke.dyndns.org/wordpress/pan-galactic-gargantuan-gargle-brain-aka-xbox-360-usb-controller/
PSGroove, a Playstation 3 Homebrew dongle: http://github.com/psgroove
PS/2 to USB adapter: https://github.com/makestuff/p2ukbd
Reprap with LUFA, a LUFA powered 3D printer: http://code.google.com/p/at90usb1287-code-for-arduino-and-eclipse/
RF Transciever using the MRF49XA: http://alternet.us.com/?page_id=1494
SD Card reader: http://elasticsheep.com/2010/04/teensy2-usb-mass-storage-with-an-sd-card/
SDR1, a Software Defined Radio firmware: https://code.google.com/p/sdr-mk1/
SEGA Megadrive/Genesis Development Cartridge: http://www.makestuff.eu/wordpress/?page_id=398
Serial Line bus analyser: http://www.pjrc.com/teensy/projects/SerialAnalyzer.html
Smartcard Detective: https://code.google.com/p/smartcarddetective/
SmartportVHD Apple II Mass Storage adapter: http://pcedric3.free.fr/SmartportVHD/
Single LED Matrix Display: http://guysoft.wordpress.com/2009/10/08/bumble-b/
Stripe Snoop, a Magnetic Card reader: http://www.ossguy.com/ss_usb/
Stylophone, with USB MIDI connectivity: http://www.waitingforfriday.com/index.php/Stylophone_Studio_5
Teensy SD Card .WAV file player: http://elasticsheep.com/2010/04/teensy2-usb-wav-player-part-1/
Touchscreen Input Device: http://capnstech.blogspot.com/2010/07/touchscreen-update.html
Universal USB AVR Module: http://usbavr.bplaced.net/
USB2AX, a USB to Dynamixel network adapter: http://paranoidstudio.assembla.com/wiki/show/paranoidstudio/USB2AX
USB Infrared Receiver/Transmitter: http://vaton4.web2001.cz/
USB Interface for Playstation Portable Devices: http://forums.ps2dev.org/viewtopic.php?t=11001
USB MIDI to DMX controller: http://github.com/hanshuebner/miDiMX
USB powered Geiger Counter: http://uhrheber.wordpress.com/2011/04/28/a-usb-powered-geiger-counter-for-the-z2-and-other-computers/
Userial, a USB to Serial converter with SPI, I2C and other protocols: http://www.tty1.net/userial/
Wireless MIDI Guitar system: http://www.ise.pw.edu.pl/~wzab/wireless_guitar_system/
Xnormidi, a C MIDI library: http://x37v.info/projects/xnormidi
XUM1541, a Commodore 64 floppy drive to USB adapter: http://www.root.org/~nate/c64/xum1541/
Zeus, a touch screen computer for music manipulation: http://www.benbengler.com/developments_zeus.html

Projects Using LUFA (Commercial)

The following is a list of known commercial products using LUFA. Some of these are open source, although many are "black-box" solutions with no source code given. Those companies which have purchased a Commercial License to LUFA (see Source Code License) are not listed here unless specifically requested.

Arduino Uno, the official Arduino board: http://www.arduino.cc
ARPS Locator: http://la3t.hamradio.no/lab//?id=tracker_en
CFFA3000, a CompactFlash interface for the Apple II: http://www.dreher.net/CFforAppleII
Digital Survey Instruments Magnetometer and Pointer: http://www.digitalsurveyinstruments.com/
FinchRobot, a robot designed for educational use: http://www.finchrobot.com/
Penguino, an Arduino Board With On-Board LUFA Powered Debugger/Programmer: http://wiki.icy.com.au/PenguinoAVR
PIR-1, an IR control interface for consumer electronics: http://www.promixis.com/pir-1.php
PIR-4, a USB Connected 4 port IR transmitter: http://promixis.com/pir-4.php
KeyGlove, an alternative input system: http://www.keyglove.net/
Many of Busware's Products: http://www.busware.de/
MIDIFighter, a USB-MIDI controller: http://www.midifighter.com/
Norduino, a wireless Arduino: http://norduino.robomotic.com/norduino-is-now-usb-hid/
Retrode, a USB Games Console Cartridge Reader: http://www.retrode.org
RFI21.1EU UHF RFID reader: http://www.metra.cz/rfid/uhf-rfid-ctecky/rfi21-1eu-uhf-rfid-ctecka.htm
SmartCardDetective, a Smart Card analysis tool: http://www.smartcarddetective.com/
USBTINY-MKII, an AVRISP-MKII Clone AVR Programmer: http://tom-itx.dyndns.org:81/~webpage/boards/USBTiny_Mkii/USBTiny_Mkii_index.php
VMeter, a USB MIDI touch strip controller: http://www.vmeter.net/
XMEGA Development Board, using LUFA as an On-Board Programmer: http://xmega.mattair.net/
Zeptoprog, a multifunction AVR programmer: http://www.mattairtech.com/index.php/featured/zeptoprog.html

Publications Mentioning LUFA

Elektor Magazine, "My First AVR-USB" by Antoine Authier (feature), January 2010 Issue
Elektor Magazine, "USB is Cool/Sucks" by Jerry Jacobs and Chris Vossen (minor mention), January 2010 Issue
Elektor Magazine, "20 x Open Source" by Jens Nickel, March 2010 Issue
Circuit Cellar Magazine, "Advanced USB Design Debugging" by Collin O'Flynn, August 2010 Issue

Non-Official LUFA Ports and Forks

NXP's official "nxpusblib" LUFA fork, for LPC devices: http://www.lpcware.com/content/project/nxpusblib
Kevin Mehall's LUFA port to the NXP LPC13xx: https://github.com/kevinmehall/LUFA-LPC13xx

Other Notable Mentions of LUFA

Adafruit "Ask an Engineer", 7th November 2010
Arduino 2010 Keynote speech
The Amp Hour podcast blog #11
Blackhat 2011 conference, "Exploiting USB Devices with Arduino"