Reverse Engineering Tools

There are some tools mentioned in http://reverseengineering.stackexchange.com/questions/1817/is-there-any-disassembler-second-to-ida

And there is a good site: Reverse Engineering using the Linux Operating Systemhttp://reverse.lostrealm.com/ )

The last thing....

I don't have any device from Apple. SO I KNOW NOTHING ABOUT iOS and OSX. :P