I wrote PostgreSQL service manager (for spoiled windows users) using
wxWindows that can query service status, start, stop and restart postmaster
service under windows(currently under cygwin, but this should work even with
native port when finished as long as service name is "postmaster"). I would
also like to implement it for linux, but this one I did not finished yet.
It was a litle play with wxWindows and MinGW since I saw yours choice of
tools for PgAdmin3.
Concerning the fact that PgAdmin is No.1 free Postgres GUI, I would be
glad to contribute the code If You are interseted.
Regards !