Minecraft Java 1.12 Mods
Browse 25,057 free mods for Minecraft Java 1.12 — popular picks include MultiLang - The best free multi localization plugin, AdvancedNBS, CommandBrothers » Send console commands from Bukkit to BungeeCord.
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MultiLang - The best free multi localization plugin
The best free multilang plugin. MultiTranslate inventories, entities, messages of EVERY plugin
AdvancedNBS
An early advanced plugin to control the NoteBlock API
CommandBrothers » Send console commands from Bukkit to BungeeCord
Command4Bungee and Command4Me
Minecraft Anti Exploit Plugin
Minecraft Anti Crash / Exploit

Scoruluce Smooth Swords
A smooth edit of swords of faithful classics 32x32. by @Scoruluce (small sword versions incoming)
XPlayerKits | Lightweight Custom Kits | Folia Support
A lightweight and fully customizable kit system that loads only the essential data, keeping RAM.
Fraud - Alts Finder - GEOIP PRECISION UPDATE
Fight against alts accounts.

Classic Fabricators
Addon for IC2 Classic & Buildcraft that adds a lava and oil fabricator

AutoShutdown
Automatically stop/shutdown your server after no players have been online for a specific amount of time
PerWorldCommands
Put a command for a world.
SQLite for BungeeCord
Use SQLite with BungeeCord plugins.
♦ Advanced Server Log ♦ [Chat, Commands, kills/deaths, chest, drop, join etc.] [UUID] [1.8 - 1.12.2]
Ever wanted to record almost everything going on in your server with ease? well check me out.

PlayerWarp
A useful cross-server warp plugin

PathFinder API
A lightweight API for parsing command data in Minecraft mods. Works seamlessly with the Ultimate Backport Mod to enable dynamic command suggestions.
LearJoinMessage» Mensaje personalizado de Bienvenida
Este plugin esta enfocado al MOTD de bienvenida!
CReward-Reborn [1.8-1.21.x]
GUI | Multi-Rewards | Permissions | MySQL | Sounds | Hex Color | PlaceholderAPI
DiscordConsole
Send Minecraft console messages to a discord channel!

TouHouMusic
Replace the in-game record file with an Touhou Project track!
JoinMessage | Customizable message On-Join
Sends a message to the players when they enter to the server
LevelSmp - Custom XP and Unban Book Plugin
Elevate Your Minecraft Server with LevelSmp: Unleash Custom XP Mechanics and Unlock the Power of Unb
LabyMod API Addon [1.8-1.17.1]
A addon for the LabyModAPI [1.8-1.17.1]
Very Easy Jobs
Mine, mine, farm, farm, load, load.
Drop Party
Drop Party+ is a lightweight Drop Party system!
Geyser Core
Includes core functionality and shared code for plugins in the Geyser suite
HideItem [Abandoned] [1.8 - 1.15]
A plugin for hiding and showing players
Ore Regen [Skript]
Regen ores when player's break them (Toggleable)
FionaBungee [Fiona AntiCheat Addon]
A useful add-on for a great anti-cheat.
SilentLobby | GERMAN |
Dies ist ein SilentLobby-Plugin für Spigot-Server!
SuperVotes [1.8 - 1.16] | Voting System and Vote Party
Provides a powerful voting system and vote parties.
Chat Cooldown (Free)
Prevent spam on your server, create groups with different chat cooldowns.
Custom Whitelist
Makes a cool little whitelist message.
✨AdvancedSensitiveWords [Multi-platform]| Ultimate Anti-Swear solution | 1.8-1.21
⭐One-stop-shop anti-swear solution for your server!⭐
DelayCommand - Extremely Configurable! (1.7.10 - 1.15.2)
A plugin to delay the sending of commands.
Disable Join Message ▸ 1.8-1.21.8
A plugin that can disable join/leave message as well as Death Message
Pointz : CMS -> manage points [1.8 - 1.18]
CMS Mineweb, Only mineweb
PrisonCore
Deprecated, but if you want to fork it and continue go ahead.