You will want to have the following software installed in order to make your life easier and make you more efficient.
Disassembler (At least one of the following):
The add-ons help with finding ROP gadgets. Pwntools is a great add-on to interact with binaries in general.
Note that Radare2 is not only a powerful disassembler and debugger, it is also free. Not only does it have a command line version, but it also comes with various GUIs.