The "Not So Shitty Open Canvas Server"!
A good friend of mine hooked me up with this gem; it'll make OC sessions more stable and has a good handful of features that can increase the layers you have, allow you to add more people, enable others to draw on your layers, set passwords and manage users, etc.
I've started using it myself, and it's been quite useful. If you feel like taking a look at it, you'll probably be pretty pleased c:
(Bless the person who made this ffff)