This is where Waterdude manages and distributes their work, both public and private. You won’t find better quality than that from Atlantis!
Many plugins can be found here, such as AquaGyms, AquaSkills, AquaCrates, AquaGTS, and more! Support and issue trackers for these plugins can be found too, with support for any issues you may come across, and (relatively) frequent updates to keep them in line with latest versions.
Help with developing your own plugins can also be gotten here, so feel free to ask whatever you’d like!