You can buy and download Tracker from Songoda Marketplace
Tracker only supports versions 1.8.8 and above. Support for 1.7 and below will most likely never be added.
Tracker doesn't have any dependencies, but you can install these plugins to enhance your experience.
WildStacker (Allows for accurate tracking for killing stacks of mobs)
StackMob (Allows for accurate tracking for killing stacks of mobs)
Note: UltimateStacker support will soon be added. Feel free to recommend any other stacker plugins in our discord.