Larian Studios Forums Divinity: Original Sin 2 - The Modding Dungeon Divinity - Original Sin 2 - Modding General D:OS2 on GOG and Steam Workshop content.

Other games I've modded have had splintered modding communities due to this. Steam Workshop almost always gets more mod uploads than the alternatives.

In my opinion the Steam Workshop is the superior solution. It allows subscribers of your mods to get automatic updates, for example.