Inventory as a grid
You mean the successor of InventoryGridView?
https://www.esoui.com/downloads/info2341-GridList.html
AddOn loader
The "load out of date addons" feature is part of the game now (just a checkbox). If you meant some kind of an AddOn manager, then AddOn Selector comes to mind:
https://www.esoui.com/downloads/info...ilespacks.html