BG1NPCThe BG1 NPC Project adds a great deal of content by expanding the depth of character and levels of interaction with the NPCs from the Baldur's Gate game. Requires Tutu, BGT, or BGEE.
ProjectInfinityProject Infinity - a mod manager for Baldur's Gate Enhanced Edition, Icewind Dale Enhanced Edition, Planescape Torment Enhanced Edition and Enhanced Edition Trilogy (EET).
luciaAn audio game engine written in python
SwordCoastStratagemsSword Coast Stratagems (SCS) adds over 130 optional components to Baldur's Gate: Enhanced Edition, Baldur's Gate II: Enhanced Edition, Baldur's Gate II: Throne of Bhaal, Baldur's Gate Trilogy, mostly focused around improving monster AI and encounter difficulties, but also including cosmetic and ease-of-use components, tweaks to abilities or spells.