Sound Programming
Korean Traditional Instrument VSTi Plug ins, 2003 - free Korean Traditional VSTi more info.
Max/MSP Style OOP GUI Sound Program for PC - downlaod
Video Synthesizer, 2002 - free to download
Sawtooth Modulation VST for Windows 95,98, 2000 - free to download
Tremolo, Ring Modulator VST for Mac OS9, 2000 - free to download
Max/MSP Externals for OS9 - free to download
Mobile Programming
Android
iGayageum : free Android Gayageum App. Korean Traditional Instrument
iSamulnori : free Android Samulnori App. Korean Traditional Percussion more info.
iSamulnoriPAD : Samulnori PAD : Korean Traditional Percussion with MPC Style
-
Processing, eBook for Samsung Galaxy Tab, download it for free, 2011
Presidential Counter , 2011
iOS
iGayageum : free iPhone Gayageum App. Korean Traditional Instrument View In iTunes
Korean Traditional Percussion by Korea No.1 Fusion Band Oriental Express View In iTunes
Korea No.1 Fusion Band Oriental Express official app. View In iTunes-
Presidential Counter 2011, View In iTunes 
Sabjil Game 2011, View In iTunes
Hardware Design
Sensor in a box ( MIDI Tron) ,2007, info
Instrument Design
iGayageum,2009, info :: iGayageum (Electronic version of Korean Traditional Gayageum)
iHaegeum, 2009 : Instrument Design :: iHaegeum (Electronic version of Korean Traditional Haegeum)
iJanggu, 2008 : Instrument Design :: Per cussion
Screen Drum, 2005 , info
Gayageum Nong Hyun (Vibration) MIDI Controller, 2003 , info