Vot made a joke about a joke handle, calm down people.
And yeah, ZXSpin is fine.
If we're still on the generic topic of "please open-source all the things", well, some of the things are bound to be shit
It's just a silly request. As I said, if you want to further develop the source of software you really like, contact the original author and tell him the features you want to add by programming them. Chances are you will get the source. Make sure he hasn't already published it, various famous sites like github has nothing to do with the sources actually being online or not. So if you care, look first.