The one distinction that decides it
Plugins run on the server and change how it behaves. Players connect with a completely normal Minecraft client and never know the difference. Mods change the game itself, adding blocks, items and mechanics that do not exist in Minecraft, which means every player needs the identical mod set installed to join.
So the question is rarely "which is best" and almost always "do my players need to install anything". If the answer is no, you want Paper or Purpur. If you are building a modpack experience, you want Fabric.
Paper
Paper is the default choice for most public servers, and for good reason. It is heavily optimised compared to vanilla, supports the enormous Bukkit and Spigot plugin ecosystem, and exposes configuration for the parts of the game that cause performance problems at scale.
Practically, Paper is what you want for a survival server, a minigame server, or anything where you want permissions, land claims, an economy or anti-grief. All of those are plugins, and they are mature and well maintained.
- Best performance-to-effort ratio for public servers
- Players join with an unmodified client
- Huge plugin ecosystem, installable from the panel plugin browser
- The safe default if you are not sure
Purpur
Purpur builds on Paper and keeps full plugin compatibility, adding a long list of extra configuration options. Most of these are gameplay behaviours that neither vanilla nor Paper lets you change.
It is worth choosing when you have something specific you want to configure. If you do not, Paper is fewer moving parts for the same result.
Fabric
Fabric is a lightweight mod loader, and the usual choice for modded servers on current Minecraft versions. It starts faster and updates to new Minecraft releases sooner than the heavier alternatives.
The tradeoff is coordination. Every player needs the same mods at the same versions, so you will be distributing a modpack rather than just an IP address. Memory requirements are also considerably higher, because a modpack loads its content before anyone joins.
- Required for modpacks and new game content
- Every player must install the same mods
- Needs substantially more RAM than a plugin server
- Updates to new Minecraft versions relatively quickly
Vanilla
Vanilla is the unmodified server from Mojang. It is the right answer when you want exactly the game as designed, for a small private world among friends, and you do not need permissions, claims or moderation tooling.
For anything public it is usually the wrong choice, not because it lacks features but because it lacks the performance work and the moderation plugins that keep a public server usable.
When you need a proxy
Once you want more than one world behind a single address, a hub connected to a survival server and a minigame server, you add a proxy. Velocity is the current recommendation and Waterfall the older option; both are supported on StormNodes.
A proxy is also the practical way to combine modded and plugin servers, since each backend server runs its own software and the proxy moves players between them.