Core Addons
ElvUI
https://github.com/ElvUI-MoP/ElvUI-5.4.8/releases
Also has plugins
https://github.com/orgs/ElvUI-MoP/repositories?type=all
WeakAuras
https://github.com/Maczuga/WeakAuras2-MoP/releases
BigWigs
https://github.com/Tauri-WoW-Community-Devs/tauriwigs
ERT
https://www.curseforge.com/wow/addons/method-raid-tools/files/799082
DBM
Details
https://github.com/SushiWoW/MoP-Details
QoL
Addon Control Panel
https://www.curseforge.com/wow/addons/acp/files/809374
xCT+ Combat Text
https://www.curseforge.com/wow/addons/xct-plus/files/804403
ExtraCD
Trinket ICD Tracker
https://www.curseforge.com/wow/addons/extracd/files/778809
LeatrixPlus
Auto turn-in, auto-accept, etc.
https://github.com/aglarcz/MoP-LeatrixPlus