Bukkit

Reduce or remove all server lag, Use 2x less ram as before!

[MECH] LessMobLag - Prevents Server-Side Mob Lag By Preventing Pointless Spawns

Ensures that your server can't be lagged out by minecarts

Removes XP Orbs on Player Death preventing Massive XP amounts to cause Lag.

A plugin that allows the invisibility of other players to reduce lag.

Simulate lag for those players that just won't leave you alone!

Cancel domage or death, due to a lag or regen, when a player log on or is teleported.

A Paper plugin that changes view distance based on server lag!

Lag prevention made by The_Gang

LAG-FREE item generators

Lets you check the server lag, in ticks-per-second

Automatically send item drops to your inventory when broken. Popular on Prison servers to reduce lag.

Plugin that disables users from using buket's and spamming/throwing eggs

Remove lag on your Bukkit server with this easy to use plugin

A great Bounty plugin for presenters. No Lag, Turkish supported, handy Bounty plugin

Caps those laggy mob-grinders by limiting the number of mobs that can spawn in a region over time