There's apparently zero mods at the moment which offer as much features as your plugin. It would be great to see nice round worlds on modded servers too so is there any chances for Forge port of this plugin?

Someone did a Forge port of WorldBorder which they released quite some time ago, though I'm not sure what the current state of it is.

Anyway, doesn't Spigot generally work with other mods?

@Brettflan I noticed that you mentioned the Forge port on your BukkitDev page but unfortunately the link redirected to 404 Not Found, so I assume that there's none at the moment.

Anyway, doesn't Spigot generally work with other mods?

I was hoping this when I started to exchange my server from Bukkit/Spigot to Forge, but as far as I know it's impossible to run mods and plugins at the same time. If you got more information about this I'll be grateful.

@Brettflan Can you consider making a Sponge port? I tried it but I've never modded Minecraft before so it's hard but it looks a lot like a Bukkit.

I don't have the time or desire to do so, sorry.

@Brettflan I have but I have none of experience about programming Minecraft so I can't do it alone. Certainly I have common experience at programming just to make you know.

If you want to try making a port of it for Sponge, you're welcome to do so. I've never used Sponge, so I can't really help with that end of things, but I don't mind answering questions about my code here or how it works through Bukkit.