1)   Easy Video to 3GP Converter 1.0.0
Easy Video to 3GP Converter converts video files for mobile phone and PDA.You can convert almost all popular video formats, e.g. AVI/DIVX/XVID/DIV, MPEG/MPG/DAT, WMV/ASF/ASX, RM/RMVB, MOV/QT, 3GP/3G2, MP4/M4V, FLV, and any video format play-able.

 2)   Altdo Video To 3GP Converter 1.4
Altdo Video to 3GP Converter is a powerful multi-format conversion tool for 3GP movie with high speed and without movie quality loss. It can convert *.3gp, *.avi, *.asf, *.mov, *.wmv, *.mp4, *.m4v, *.mpeg, *.mpg to 3GP format.

 3)   iWellsoft 3GP Video Converter 4.3.1612
iWellsoft 3GP Video Converter is a powerful 3GP converter which can convert almost all popular video formats to 3GP/3G2/MP4 video clips and play them in mobile phone or other software 3GP player.