NetRadiant-Custom

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Score7.0

Rank#4 of 24

PriceFree

Free planYes

Runs onLinux, macOS, Windows

Summary

NetRadiant-Custom is a free, open-source level editor for games based on id Tech, with a main focus on Quake, Quake 3, and Quake Live. Releases also include configurations for other games. It runs on Windows, macOS, and Linux, and ready-to-use packages are available in the project’s Releases section. In its 3D view, users can create and edit brushes and entities. Geometry tools include vertex editing, brush-face extrusion, patch thickening, and a CSG shell modifier. Texture tools support UV alignment, drag painting, copying textures between brush faces and patches, and locking textures during vertex or edge edits. Keyboard shortcuts, interface themes, and fonts can be customized. Viewports offer anisotropic texture filtering and optional MSAA. Region mode limits working compilations to the map area in that region. Bundled Q3Map2 tools include automatic map packaging and BSP-to-JSON import and export; its Assimp library supports more than 40 model formats. Supported formats include .map, .bsp, .pk3, .dpk, .dpkdir, and several map-definition and brush formats.

Who it is for

It suits people creating or editing levels for Quake-family and other id Tech-based games. Its geometry, texture, and map compilation tools serve users who want a dedicated level editor.

What is good

Free and open-source.
Runs on Windows, macOS, and Linux.
Includes brush, entity, vertex, and texture tools.
Region mode compiles only the relevant map area.
Q3Map2 supports BSP import and export as JSON.

What to know first

Main focus is Quake, Quake 3, and Quake Live.
Ready-to-use packages are provided through the Releases section.

Verdict

NetRadiant-Custom provides a broad set of level editing and map tools for id Tech-based games. Its primary focus is the Quake series, though releases include configurations for additional games.

NetRadiant-Custom plans and pricing

All plans

Free Free Open-source level editor; ready-to-use packages in Releases github.com · 29 Sept 2026

Compared on game modding tools

Free plan: Yesgithub.com
Archive extraction: Yesgithub.com
Mod packaging: Yesgithub.com
Script editing: Yesgithub.com
Supported formats: .map, .bsp, .pk3, .dpk, .dpkdir, Valve 220, brush primitives, axial projection, .def, .ent, .fgdgithub.com
Supported platforms: Windows, macOS, Linuxgithub.com

Facts

Purpose: NetRadiant-Custom is an open-source, cross-platform level editor for id Tech based games.github.com · 29 Sept 2026
Project lineage: The project describes itself as a fork of NetRadiant, following GtkRadiant 1.4, a rewrite, version 1.5, and NetRadiant.github.com · 29 Sept 2026
Target games: Its main focus is Quake, Quake 3, and Quake Live, and releases include configurations for many additional games.github.com · 29 Sept 2026
3D editing: The editor supports brush and entity creation and manipulation in the 3D view.github.com · 29 Sept 2026
Geometry tools: Listed tools include vertex editing, brush face extrusion, patch thickening, and a CSG shell modifier.github.com · 29 Sept 2026
Texture editing: Features include a UV tool for texture alignment, drag painting, texture paste between brush faces and patches, and texture locking during vertex and edge manipulation.github.com · 29 Sept 2026
Customization: Users can customize keyboard shortcuts, GUI themes, and fonts.github.com · 29 Sept 2026
Rendering: The project lists anisotropic texture filtering and optional MSAA in viewports.github.com · 29 Sept 2026
Map compilation: Working region compilations build only the regioned part of a map when region mode is enabled.github.com · 29 Sept 2026
Q3Map2: The bundled Q3Map2 feature list includes an automatic map packager and support for importing and exporting BSP as JSON.github.com · 29 Sept 2026
Model formats: The Q3Map2 feature list says its Assimp model-loading library supports more than 40 formats.github.com · 29 Sept 2026
Downloads: The project points users to its Releases section for ready-to-use packages.github.com · 29 Sept 2026
Latest build: The Releases page identifies a Latest Build released on January 14 and lists four assets.github.com · 29 Sept 2026
Security: The repository page shows a Security and quality section with 0.github.com · 29 Sept 2026