free tool for gene model?

[yvan.wenger]

Hi everybody,

I'd like to map 454 (+illumina) reads to a genomic contig to get the splice variants possibilities.

It would be great if it could be linked to a visual interface resembling that: http://www.timelogic.com/decypher_genedetective.html
(first image)

I*tried ssahaEST and smalt but could not find a good way to visualize the outcome (such as in genedetective above).

Any advice welcomed!

Best,

Yvan