Bukkit

Set up custom villager shopkeepers

Vault is a Economy/Permission plugin for hooking into the various Economy and Permission plugins.

This is a easy to use GUI shop plugin.

The modern Essentials suite for Spigot and Paper.

Another auction house plugin.

A shop plugin that allows players to sell items from a chest with no commands.

Multiverse Inventories allows you to control who and what can cross world borders!

QuickSell

A collection of useful commands and features for server admins and players.

BukkitInventoryTools - Shop, Digital Lock, sort and stack your inventory

Fully Custom GUI Menu Maker & Menu Builder Plugin. Design interactive GUIs with Inventories, Dialogs, or Floodgate, powered by animations and logic. Includes an Online GUI Editor for effortless menu creation.

Jobs Reborn

The all in one Shop plugin, With a sexy GUI, Sleek code, and light weight performance!

Now with custom enchant table/anvil mechanics! Manipulate item names, lore, enchantments, and more!

Orebfuscator - Anti Xray

Unique and challenging custom achievements or quest-like objectives on your server! Books, fancy GUI, rankings, rewards, effects and more!

The best chest&sign shop system for Bukkit

Allows server admins to easily modify how Minecraft works without programming anything

MobHunting provides a fun way to get money from hunting monsters

Replicate first-person shooters with advanced gun-mechanics and a vast number of exciting and fully customisable features.