Quests
By
LMBishop — Allow your players to do quests in return for rewards
BetterGUI
By
HSGamer — An animated menu, a simple menu-designing tool, or just a better GUI plugin
Playtime
By
Zach_FR — Simple /playtime command to see your playtime on server
AutoPickup
By
TeamVK — AutoPickup loots, mined blocks (with Silk/Fortune): supports AutoSell/McMMO/TokenEnchant/Sack!