Monitor performance of your Minecraft server. Similar to VisualVM and Java Mission Control.

Kafka Zookeeper RESTful API to perform topic/consumer group administration/metric(offset\lag\message) collection and monitor

Smart Server Performance

Fix (some) minecraft lag spikes

Paper/Folia plugin to find groups of entities and tile entities. Ideal to detect XP farms or pesky hopper sorter!

The Kryptonite of lag.

Kafka Consumer Lag Monitor (with Kerberos Support)

A Simple Exploit Fixer plugin that aims to fix most lag machines

Software to produce lag by flood.

LagSense: Smart lag analyzer for Minecraft. Identifies if lag is from your connection, PC, or server. Provides real-time metrics (ping, TPS, chunk load times) and optimization tips. Simple /lagsense command. For Spigot/Paper 1.20.4+

SpigotMC plugin that allows players to check the server's ram usage and ticks per second. (/stats)

Modern, concept lag plugin that removes drops before they happen

Bukkit plugin for reducing performance impact of villager pathfinding. Based on froobynooby/Anti-Villager-Lag.