WowAce

Tracks rare drops, including companions and mounts

Find five Ephemeral Crystals, get a pink hippogryph

Collectinator is an addon which will scan your pets and mounts and provide information on how to obtain them.

Add-on that shows which mounts can be farmed this week

mount and companion manager

Add-on that shows which battle pets can be farmed this week

Auto and random summon highly customizable for your pets and mounts, with Data Broker support.

Shows the health of the player's current bodyguard.

Shows the source of an item as a tooltip

The One-Key-Mount™ — Simple to use, configured with Rock

Generate a macro with random mounts

Pet Battle Lite Frame

Dynamic mount macro generator

Interface-central mount management

Adds team information to PetBattleTeams Addon

Don't underestimate your little critters!

One-click smart mounting.

Displays Pet Info for Hunters and Warlocks. Also keeps track of Stables and Pet and Demon skills.

Pet Theory

Allows you to customise which companions are chosen by the "/randompet" command.