Great choice of software here!
I haven't come across Ninite before, but i will look in to it now.
Some other key pieces of software that I use are CCleaner, Malwarebytes and 360 Internet Security.
360 Internet Security uses 5 of the leading anti virus engines at once, compared to just the one. It can be a little too safe at times, but it is always better to be safe than sorry!
GIMP is another good suggestion, purely because I find MS Paint too under powered, and Paint 3D to be a complete mess! I don't get on with either of them.
Do you use these pieces of software yourself? I am keen to hear what your thoughts are on each.