ModsJava
ServerBooster-Free
Java mod listed for Minecraft 1.21–26.x. Download on the author's site.
⬇ Download on Spigot
⚡ ServerBooster ⚡
Free Server Performance Plugin for PaperMC, Spigot & Purpur
Lag killing your server? Fix it in 30 seconds.
Drop in the JAR. No config needed. Just works.
Free Server Performance Plugin for PaperMC, Spigot & Purpur
Lag killing your server? Fix it in 30 seconds.
Drop in the JAR. No config needed. Just works.
What Does It Do?
ServerBooster finds what's lagging your server and fixes it automatically.
Mobs, hoppers, redstone, chunks — it handles everything.
ServerBooster finds what's lagging your server and fixes it automatically.
Mobs, hoppers, redstone, chunks — it handles everything.
✅ All Free Features
⚡ Works Everywhere
- One JAR for PaperMC, Spigot, Purpur, and all forks
- Auto-detects your platform and picks the best optimizations
- No extra dependencies required — just drop and go
Beautiful In-Game Dashboard
- Live TPS sparkline, memory gauge, and server stats
- Toggle any module on/off with one click
- Per-world entity counts and loaded chunks
- Alert history — see what optimizations are running
Smart Entity Management
- Per-entity-type limits with radius and chunk caps
- AI freezing for mobs in inactive areas — they stop thinking, you stop lagging
- Aggressive despawning cleans up excess mobs
- Breeding and growth rate throttling to prevent animal farm lag
⚙️ Hopper & Redstone Optimizer
- Sleeping hoppers — if they're not moving items, they stop ticking
- Redstone clock detection — auto-throttles lag machines
- Observer loop detection — stops infinite loops without breaking farms
- Dust deduplication — reduces same-tick wire updates
Dynamic View Distance
- View distance scales down when TPS drops, scales back up when it recovers
- Idle players get reduced distance automatically
- Your active players always get the best experience
Item Stacking
- Ground items merge together instead of piling up
- Hologram labels and glow effects so players can see what's stacked
- Fewer entities on the ground = better performance
Even More Optimizations
- Chunk Packet Throttling — Controls how fast chunk data goes to players
- Portal & Piston Budgets — Prevents lag machines
- Elytra & Trident Speed Caps — Stops fast travel from overloading chunks
- Crop Growth Throttling — Reduces farm tick overhead in empty chunks
- Furnace & Dropper Sleep — Idle machines stop ticking
- Faster Leaf Decay — Cleans up floating leaves fast
- Auto Garbage Collection — Smart JVM memory management
- Console Filter — Hides spammy log messages
- Spawner Throttling — Reduces spawner load during lag
- TPS-Based Commands — Auto-run commands when TPS drops
️ Commands
Code (Text):
Command Alias Description Permission
/serverbooster /sb Open the dashboard serverbooster.admin
/sb reload — Reload configuration serverbooster.reload
/sb mobs count — Count nearby entities serverbooster.mobs.count
/sb mobs check — Inspect mob you're looking at serverbooster.mobs.check
/sb mobs forceoptimize — Force-run entity optimizer serverbooster.mobs.forceoptimize
/sb emergency — Toggle emergency mode serverbooster.admin
/sb alerts — View recent alerts serverbooster.admin
/sb benchmark — Run 30s performance test serverbooster.admin
Installation
- Download ServerBooster-Free.jar
- Drop it into your /plugins folder
- Restart your server
- Type /sb to open the dashboard — done!
- Fine-tune anything in plugins/ServerBooster/config.yml
Requirements
- Minecraft: 1.21+
- Java: 21+
- Server: PaperMC, Spigot, Purpur, or any compatible fork
- Optional: ProtocolLib (for packet optimizations), PlaceholderAPI
Want Even More Performance?
Upgrade to ServerBooster Premium and unlock:
Smart Explosion Engine — TNT & creeper farms won't lag anymore
Advanced Villager AI — Stops villager lag completely
Packet Metadata Filtering — Smooth gameplay even under pressure
→ Get Premium Here ←
Upgrade to ServerBooster Premium and unlock:
Smart Explosion Engine — TNT & creeper farms won't lag anymore
Advanced Villager AI — Stops villager lag completely
Packet Metadata Filtering — Smooth gameplay even under pressure
→ Get Premium Here ←
Created with ❤️ by RRS
Optimized for modern Minecraft servers.
Optimized for modern Minecraft servers.
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21, 26.1
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Spigot — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
ServerBooster-Free is a free Minecraft Java mod. Compatible with Minecraft 1.21, 26.1. Downloaded 217 times (via Spigot). Download it and open it directly in the game.