Well, if they're simply unrelated scripts (and if you're running Linux or something similar), you could just write a shell script which runs them in the background..

#!/bin/sh
script1 &
script2 &
.
.
script30 &
[download]

If that's all you basically need, then writing a complicated Perl program with forking, signal-handling and all that seems a bit of an overkill. :)