Slade

SLADE is a cross-platform open-source editor for Doom-engine games. It enables editing of maps, textures, sprites, sounds, and gameplay patches stored in WAD and related formats.

The editor supports a range of Doom-family games, including Doom, Doom II, Hexen, Heretic, and Strife, and works with both classic WAD resources and modern map formats such as UDMF. It provides tools for 2D and 3D map editing, a texture editor, a sprite editor, a palette editor, and a hex editor, all within a single workspace. SLADE includes asset management and project organization features, along with import/export facilities for game assets and maps.

SLADE can read and write WAD files and ZIP-based archives used by many Doom source ports, and it supports Dehacked patches to modify gameplay behavior. The software is designed to streamline workflows for modders and map authors by offering a unified environment for creating and maintaining Doom-engine content.

Originating as a successor to earlier Doom editors, SLADE is maintained by a community of volunteers as an open-source project. Development emphasizes adding format support, improving usability, and keeping the tool compatible with a variety of Doom-engine variants. It runs on Windows, macOS, and Linux, and is built to be extensible through a modular architecture and plugin support.