I got some time ago a program called ALOM from Don Gilbert (see
Fasman & Gilbert, TIBS 15, 1990, 89-92) which predicts transmembrane spans
according to Klein, Kanehisa & De Lisi (BBA 815, 1985, 468-476).
The source code was available by ftp to VAX.WI.EDU, directory
J-L. Risler Bionet at frcgm51.bitnet
Centre de Genetique Moleculaire Risler at frcgm51.bitnet
91190 Gif sur Yvette France