TEdit

TEdit is a free, open-source standalone map editor for Terraria that allows players to modify game worlds through a graphical interface. It provides painting-style tools for placing, removing, and modifying tiles and walls. Users can construct elaborate buildings, dungeons, castles, and landscapes without manually placing every block in the game. The editor supports modifying world properties, including time and defeated boss progression. Chest editing allows users to customize stored items and rewards. Sign editing makes it possible to add or change messages throughout the world. Selection and editing tools simplify large-scale terrain modifications. TEdit is suitable for designing custom adventures, modifying existing worlds, and preparing elaborate Terraria environments.