Top 2 bg2 open source projects

Project Infinity - a mod manager for Baldur's Gate Enhanced Edition, Icewind Dale Enhanced Edition, Planescape Torment Enhanced Edition and Enhanced Edition Trilogy (EET).

Sword 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.