Usually has the most sailings to the Arans; also offers cliff cruises and combo tickets.
Has a full schedule to the Aran islands plus Cliffs of Moher cruises.
Has several buses a day linking Galway city with Clifden, with stops in Moycullen, Oughterard, Maam Cross and Recess, and on to Cleggan and Letterfrack. If you're going somewhere between towns, you might be able to arrange a drop-off with the driver.
Serves most of Connemara. Services can be sporadic, and many buses operate May to September only, or July and August only. Some drivers will stop in between towns.