1)   Xilisoft FLV Converter 7.3.20.1121
It can convert all popular video formats such as DivX, XviD, WMV, 3GP, AVI, MP4, M4V, ASF, RM, RMVB, MOV, VOB and MPEG to FLV video format and also convert all popular audio formats such as MP2, MP3, M4A, AC3, AAC, WMA, OGG to FLV audio format.

 2)   2008 Most Popular FLV Converter Tools 3.1.53.0711b
It can convert all popular video formats such as DivX, XviD, WMV, 3GP, AVI, MP4, M4V, ASF, RM, RMVB, MOV, VOB and MPEG to FLV video format and also convert all popular audio formats such as MP2, MP3, M4A, AC3, AAC, WMA, OGG to FLV audio format.

 3)   Ultra Flash Video FLV Converter 3.9.0306
Ultra Flash Video FLV Converter is professional Flash Video Encoder and SWF Converter software which helps you convert FLV and SWF video files like MPEG to FLV, AVI to FLV, WMV to FLV, AVI to SWF, MPEG to SWF, WMV to SWF etc.