Just give us a list of what addons we can use.

[LittleImp]

I am pretty sure that by 3rd party tools Yoshi P refers to programs that hook specifically into FFXIV executable and modify the game's UI or graphics to give the player an advantage.
Using Discord, a completely indepedent program, at the same time than FFXIV doesn't constitute a violation of the TOS.

I swear people are drawing strays to justify the use of mods.

https://forum.square-enix.com/ffxiv/...=1#post1408111