I have been doing my exercises at home using you tube videos and until recently used a really beneficial series of workouts posted by Hasfit. These were free along with a free app to make it easier to use them and though not aimed directly at PWP seemed the best produced and most varied I could find. They have different sets of exercises aimed at strength, cardio, recuperation, stretching, etc, they also have a whole set based on boxing/MMA, very good for practicing speed of movement. Usefully they have two coaches side by side with one doing the advanced exercises and one doing easier modifications for beginners or less fit people. This is still an excellent resource but recently they made it so their workout programmes which were free now need a subscription for access though the original individual workouts. Don't blame them, i think they are well worth it and they deserve to make some money out of all their hard work.
Anyhoo, being a cheapskate and feeling like a change anyway I decided to look around for alternatives and found something called Neurofit BC who are an exercise based Parkinson's specific Physiotherapy company according to their blurb. Good range of exercises targeting speed, posture etc. Quite a tough workout and much like the Hasfit, probably most beneficial for people in early stages though both hasfit and neurofit cater for the less able with modifications and seated exercises. Have never seen any references to this specialised and free resource on here so thought this might be useful for someone?