i3
mt-mods

A next-generation inventory

flinv
Luke

API to add new inventory tabs which work across different inventory mods

Complete and Total Lua-Only Inventory Rewrite
Noodlemire

Creates a completely custom inventory system, which doesn't rely at all on any of the usual UserData objects.

Sway
lazerbeak12345

A simple inventory that makes use of Flow forms.

Anti Exploit
LMD

Protects against exploits