TapNext is the best presentation remote control software ever.

TapNext turns your iPhone into a very versatile and extremely easy to use remote control unit for a presentation.
The two major features of this application are:

(1)It works with all the major presentation software: Microsoft PowerPoint (Mac/Windows), Apple Keynote 3.0/'08/'09, OpenOffice.org Impress (Mac/Windows)

(2)The remote control works not just in Ad-hoc mode, but, also through 3G and WiFi network.

TapNext is the first application in the world with these two features.
In particular, the ability to control the presentation through 3G network opens up a world of possibilities for expressing your presentation.
The iPhone controller driving the presentation and the PC displaying it no longer have to be in the same physical location.

The set-up is easy. Download and install the receiver software on your Mac or Windows PC from the following URL.
http://www.conit.co.jp/tapnext/

In Ad-hoc mode, just boot-up the Receiver software, start the TapNext application on the iPhone and they will be connected automatically.
For WiFi and 3G network connection, boot-up the Receiver software and take note of the 5 digit code it will provide.
Then input the 5 digit code in your TapNext to make the connection.
On top of the remote control functions, there is a timer function (count-down and count-up), time keeper vibration alarm, and a voice recorder; all very useful features to support your presentation.

Main Features:
-Works with all the major presentation software: Microsoft PowerPoint (Mac/Windows), Apple Keynote 3.0/'08/'09, OpenOffice.org Impress (Mac/Windows)
-Remote control connection could be Ad-hoc, or through 3G and WiFi networks
-Easy to connect Mac or Winows
-Count-down Timer
-Count-Up Timer
-Time Keeper Alarm Vibration
-Voice Recorder(iPhone only)

TapNextReceiver Support OS
-WindowsXP(intel 32bit)
-WindowsVista(intel 32bit)
-MacOSX10.5(intelMac 32bit)
-MacOSX10.6(intelMac 32bit)