1)   Apex Free 3GP Video Converter 6.48
Apex Free 3GP Video Converter is designed to meet all your needs of convert any video to cell phone 3GP and it's free.

 2)   Daniusoft Digital Media to Mobile Phone Converter 2.0.23
Daniusoft Digital Media to Mobile Phone Converter is a powerful yet easy-to-use application that can convert audio and video to mobile phone compatible formats. It supports audio to audio, video to video, and video to audio conversion.

 3)   3GP MOBILE Converter by PSM 2007.010914
3GP Mobile Converter enables you to convert your video, CD and DVD to 3GP and 3G2 formats. You can also convert your video to AVI, MPEG, MOV, MP4, RM, WMV, MP3 and other formats. Easy to use graphic interface makes 3GP Mobile Converter easy to use.