What topo map program?

I use to have the platinum map academy software that kings outdoor put out, however it doesn't work anymore for some reason. I got on there website to see if I could get a new copy and they have discontinued them, what programe are you guys useing that does the same thing, (give you all the topo maps)
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killerbee
i use the Delorme[sp??] topo program. i like it alot. but i cant really compare it to any others , it's the only one i've used.
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