Hey, I want to know if there is a possibility or if there will be a possibility to have mods on the server without the need to have them client side pre installed. I think Spoutcraft offered this feature.
I hope you know what I want to say 
Best regards
monjo44
SpoutCraft was a minecraft client modded.
Thanks for your answer. Is there a way to auto-download the mods so its more convinient for the useres ? Or do you have an idea on how to handle this ?
auto-downloading and executing code is fairly simple to do, if you are willing to restart the Minecraft client. However it is a huge security risk.
Projects such as SpoutCraft used to send the blockproperties and textures to use, and do everything else serverside.
The development of minecraft itself has slowly been modified to make this easier and easier, and just recently, a side project of MinecraftForge was started (extremely early stages) to investigate the possibility. https://github.com/MinecraftForge/FAIL
That’s why sponge doesn’t support auto-downloading plugins from the server.
There are serverside mods, but they can’t add new blocks etc. on the client. a good example is WorldEdit. It runs only serverside, if you want it to.