Advantage/Advantix (but currently trying Revolution) for fleas/ticks. I use Interceptor for heartworm (and a bunch of intestial parasites) when I'm not using Revolution.
Deworming is only done on an as-needed basis (so far, all poops have checked negative) and would be whatever the vet prescribes depending on the parasite.
we have a farm so for worms we use panacur and safegard also ivermectine inject. oraly for fleas and ticks frontline and we have a spray we use on the donkeys and horses that work on the dogs to