https://iancoleman.github.io/bip39/ and http://bip32.org/ should work, altough you do need the correct derivation paths.
If you know some python, you can actually write a script to do everything yourself.
An other option would be to use a BIP39/BIP44 compatible wallet and restore it with your written down seed words.
This being said, with the price of a nano s, i'd personally just buy a new one, and use the mnemonic to restore my wallets instead of messing around with other tools...
If it's BIP39, I assume It should work using Multibit HD and Electrum? those software are both tested by thousands of people, I don't see any risks If they indeed work. I live in a third world country, and I'm only saying the truth when I say that packages could or could not arrive (I mean they arrive to the country but customs steal them) so I don't want to take any risks spending money If I'm not going to get my item.
I thought I could do with Electrum too, thanks ! I had my doubts but I just wanted to make sure.