Although there are recommended maximums for the number of plugins that can run on each Minecraft server plan, different plugins use different amounts of RAM. The more plugins installed, the fewer players the server can handle without noticeable lag. If users find that their server is using all its RAM, consider upgrading it.

Note: This list was updated on June 5, 2014.  There is no guarantee that these plugins will work on the server.

Recommended CraftsBukkit/Spigot Plugins

GroupManager: Permissions - This is a valuable permissions plugin that also allows ranks to be assigned. (Although it is not available on Bukkit, it is downloadable from the Essentials wiki and never needs updating!)

Essentials: Miscellaneous Server Functionality - This plugin is packed with loads of commands and features, including warps, tp-ing, spawn, homes, kits, banning/kicking, mob spawning, colored signs, and more!

WorldEdit: World Manipulation - It’s an easy-to-use in-game world editor for every server.  It has no impact on the server when not in use. Check out the World Edit wiki for more information. Availability: Any version. It is recommended to restrict WordEdit to trusted admins only.

WorldGuard: World Manipulation - a powerful plugin that provides many tools and protects servers from various problems. WorldGuard requires World Edit. Check out the WorldGuard wiki for more information. It is recommended to restrict WorldGuard to trusted admins only.

Vault: Common Dependency – it is a permissions, chat, and economy API that gives plugins easy hooks into these systems without needing to hook into or depend on each plugin. *Most plugins will need this.

ClearLagg: Optimization - It's made to remove all entities to prevent/clear lag. This plugin can help with server performance.