SLADE3

The full write-up

SLADE3 is a free desktop editor for Doom-engine games and source ports, aimed at modders working across archives, maps, and other game assets. It is most compelling when one project needs several kinds of editing in one place; its specialized focus makes it a poor fit for unrelated game workflows. Overview SLADE3 brings archive management together with map, graphics, texture, text, and audio tools. It can create, open, save, import, export, order, convert, and revert archive resources, with multiple archives open in tabs and copy-and-paste between them. Batch extraction and repacking round out the file-management side. That breadth suits a modding workflow that moves between resource types, rather than someone who only needs a narrow extraction utility. Format support spans Doom WAD and ZIP/PK3, Quake PAK and WAD2, Build GRP and ART, Shadowcaster DAT/LIB, and Amulets & Armor RES, among others. It also covers formats including BSP, GOB/LFD, RFF, HOG, and POD, as well as DMD, MD2, MD3, VOX, and KVX models. The range is substantial within game-resource editing, but the center of gravity remains Doom-engine games and source ports. Key features Maps, text, and assets The map editor handles Doom, Hexen, and UDMF maps, with 3D editing, automatic sector generation, and advanced source-port features. Level creators can work on maps alongside their other project resources; players seeking only to inspect or extract files may not need this added scope. For text work, SLADE3 includes syntax highlighting, function calltips, autocomplete, auto-indent, and find-and-replace. Graphics can be viewed, palette-remapped, converted, and exported to PNG, while Doom composite textures can be edited, including ZDoom texture definitions. It also plays MUS, MIDI, XMI, HMI, HMP, and other audio formats. ACS compilation relies on an external ACC program, and PNG optimization uses external tools such as PNGOUT, PNGCrush, and DeflOpt, so those workflows depend on additional software. Pricing SLADE3 is free: the desktop editor plan costs nothing. There are no paid tiers to weigh against a reduced feature set, and the maker accepts optional donations and code contributions. The project is developed as a hobby in the developer’s free time, a practical consideration for communities deciding how much to rely on ongoing development. The stable 3.2.12 release is available for Windows, Linux, and macOS. Version 3.3.0 Beta 2 is also available for all three platforms, but the maker cautions that beta software can have bugs, crashes, and unfinished features. Choose stable when reliability matters more than trying a beta build. Platforms SLADE3 runs on Windows, Linux, and macOS. Its source repository identifies the software as GPL-2.0 licensed. Users can discuss it on Discord or a ZDoom forum thread, contact the developer by email, or report issues on GitHub. Who it's for SLADE3 is best suited to Doom-engine modders and level creators who want archive operations, map editing, and asset inspection or conversion in one desktop application. Its wide format coverage can also help people handling related game resources. It is less suitable for a reader whose work centers on another game family or who needs only a single-purpose extractor. Pros and cons Pro: Archive creation and editing, batch extraction, and repacking sit alongside map and asset tools, reducing the need to split a multi-part Doom modding workflow across separate utilities. Pro: Support for Doom, Hexen, and UDMF maps, plus several other archive and asset formats, gives modders room to work across different resource types. Pro: The core desktop editor is free on Windows, Linux, and macOS, with a GPL-2.0 license. Con: The tool is purpose-built for Doom-engine games and source ports, so its breadth does not make it a universal game-modding editor. Con: ACS compilation and PNG optimization depend on external programs, adding setup beyond the editor itself. Con: The beta may contain bugs, crashes, or unfinished features; users who need the more cautious option should stay with stable 3.2.12. Alternatives For a wider set of extraction tools, browse Game asset extractors . Source 2 Viewer is another free, open-source option described as reverse-engineered, and supports Linux, macOS, web, and Windows. OpenKh is free Apache-2.0 software for Linux, macOS, and Windows, with .NET 8.0 Runtime required. Rusted PackFile Manager is free and supports API, Linux, self-hosted, and Windows platforms; its MIT license requires a copyright notice. arcdEx is a free Linux option. QuickBMS is a free, open-source multiplatform tool for Linux, macOS, and Windows. UABEA is a free option for Linux and Windows. Crowbar is a free Windows option with optional donations, while Crowbar is another free Windows option with optional donations. Verdict Choose SLADE3 if your Doom-engine modding work spans archives, maps, and assets: its main advantage is bringing those jobs together in a free desktop editor. Look elsewhere if your game workflow falls outside that focus, or stick to stable 3.2.12 if beta caveats are unacceptable.