Try radare2 - it is opensource, and actively developing - http://rada.re http://rada.re It also have a book - http://maijin.github.io/radare2book/ http://maiji

Try radare2 - it is opensource, and actively developing - http://rada.re http://rada.re It also have a book - http://maijin.github.io/radare2book/ http://maijin.github.io/radare2book/ Not yet complete, but also evolving. Also you can read our blog http://radare.today/ http://radare.today/ And for the justice - there is another competitor - Hopper disasm too.