SLADE3

SLADE3 is a free desktop editor for Doom-engine games and source ports, best suited to modders working across several kinds of game resources. Its broad toolkit can replace a collection of narrower editors, but its specialized focus and beta instability make it a poor fit for general game-asset work or anyone who needs predictable beta software.

Overview

SLADE3 brings archive management, map editing, text editing, graphics tools, and audio playback into one application. That range is useful when a project moves between files and asset types; for a task limited to extracting files, much of the editor may be unnecessary. Its center of gravity remains Doom-engine games and source ports, even though it handles formats from other games.

Archive work is especially comprehensive: users can create, open, save, import, export, reorder, convert, and revert resources, work with multiple archives in tabs, and copy or paste between them. Batch extraction and archive repacking add practical value for larger collections. Supported archives include Doom WAD and ZIP/PK3, Quake PAK and WAD2, Build GRP, Shadowcaster DAT/LIB, and Amulets & Armor RES, among others.

Key features

Maps and text

The map editor handles Doom, Hexen, and UDMF maps, with 3D editing, automatic sector generation, and advanced source-port features. That makes SLADE3 a more compelling choice for level creators than a utility that only inspects or extracts resources. Its text editor adds syntax highlighting, function calltips, autocomplete, auto-indent, and find-and-replace, useful when editing project text alongside maps and archives.

Graphics and audio

Graphics can be viewed, palette-remapped, converted between formats, and exported to PNG. The software can also edit Doom composite textures, including ZDoom texture definitions. Audio support covers playback of MUS, MIDI, XMI, HMI, HMP, and other formats, so users can inspect sound assets without leaving the editor. This is a broad inspection and editing toolkit, not evidence of a general-purpose graphics or audio production suite.

Format coverage and external tools

Beyond archive formats, SLADE3 supports a wide range of game asset types, including maps, fonts, textures, models, and text. It supports ACS compilation through an external ACC program and PNG optimization through PNGOUT, PNGCrush, and DeflOpt. Those workflows depend on separate tools, so the application is not entirely self-contained for those tasks.

Pricing

SLADE3 has one free plan at no cost. It includes the desktop editor, making it a straightforward option for hobbyists and modders who want the full described toolset without a subscription or paid tier. The developer accepts optional donations and code contributions; donations are not required to use the software.

The latest stable release is version 3.2.12. Version 3.3.0 Beta 2 is also available for Windows, Linux, and macOS, but the developer warns that beta builds may have bugs, crashes, or unfinished features. Choose the stable release if reliability matters more than trying the beta.

Platforms

SLADE3 supports Windows, Linux, and macOS. Its source repository identifies the software as GPL-2.0 licensed. Support channels include Discord, a ZDoom forum thread, direct email, and GitHub issue reports. The developer describes it as a hobby project developed in free time, which helps explain its community-oriented model but is worth considering if a project depends on a commercial support commitment.

Who it's for

SLADE3 is a strong fit for Doom-engine modders and level creators who need to manage archives while editing maps, text, graphics, textures, or audio. Its tabs, cross-archive copy and paste, and broad format support are especially useful when project work spans multiple resource packages. It is less suited to users looking for a universal game editor, a standalone extraction utility, or a beta tool with dependable behavior.

Pros and cons

• Pros: Combines archive management, map editing, text tools, graphics handling, and audio playback, reducing the need to switch between specialized tools for Doom-engine projects.
• Pros: Supports multiple archives in tabs, batch extraction, and archive repacking, which helps with larger or multi-package resource workflows.
• Pros: Free on Windows, Linux, and macOS, with GPL-2.0 licensing and optional community contributions.
• Cons: Its main purpose is Doom-engine games and source ports, so its breadth should not be mistaken for universal game-mod compatibility.
• Cons: The beta may contain bugs, crashes, or unfinished features; users who prioritize stability should stay with the stable release.
• Cons: ACS compilation and PNG optimization rely on external programs, adding setup steps for those workflows.

Alternatives

For a broader comparison of tools in this category, see Game Asset Extractors.

• Source 2 Viewer is a free, open-source, reverse-engineered project for readers whose work centers on Source 2 assets rather than Doom-engine editing.
• AssetRipper offers a free tier and a $10 a month Premium plan; consider it if its separate free and paid offering better suits your needs.
• OpenKh is a free Apache-2.0 licensed option for users comfortable with the .NET 8.0 Runtime requirement.
• Rusted PackFile Manager is a free option under an MIT license, with a copyright notice required when using, copying, or distributing it.
• QuickBMS is a free, open-source multiplatform tool for readers who want that alternative instead.
• UABEA is another free option for Windows and Linux.
• Crowbar is a free Windows alternative with optional donations.
• Kuriimu2 is a free open-source toolkit for Windows.

Verdict

Choose SLADE3 if you make Doom-engine content and want archive, map, text, graphics, and audio tools in one free desktop editor. Its main advantage is the reach of that integrated toolkit; look elsewhere if you need a general-purpose asset editor, and choose the stable release rather than the beta if crashes or unfinished features are unacceptable.