Limewire will install but there is a free software equivalent called Frostwire.
It is available from Getdeb.net. Isohunt is a website and you can get a Search
engine for it from Firefox. Go to the Search part of the bar at the bottom
choose Get More Search Engines. Add the Mycroft Project search engine. Select it
and input ISO in the search window. Press Enter. Choose ISOhunt from the middle
of the list. Add it as a search engine and you are in business.
Bittorrent has a variety of choices. My favorite is Deluge, but Transmission is
the default. Vuze (formerly Azureus) is good. There are many others in the
repositories.