Ultimately, basic Bukkit plugins may be compatible through pore, as mentioned by @Flibio, but the catch is that with the SpongeAPI, there’s just so much more that can be done in a clearer sense. The pending event changes and the overall Data API has a significant amount of uses (including a thread on how to use it) that you’re almost better off expecting plugins to be re-created without issues of mod compatibility. The other problem with a lot of Bukkit plugins is that they used a heavy amount of what’s called NMS (underlying implementation of the server code) because the features they wanted lacked any representation in the Bukkit API. Of course, over time, there will be an exponential surge of SpongeAPI plugins replicating their Bukkit counterparts closer as Sponge reaches a full implementation release. As it stands now, SpongeAPI and the implementations are still undergoing heavy development so many plugin developers are holding off until things are more stable.
4 Likes