Software · Development

GtkRadiant

Level editor for ID Tech based games including Quake series.

Completely free
Windows, macOS and Linux
Open source

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Geographic availability: No geographic restriction found in our sources; availability is not checked country by country.

Technical details

Pricing: Completely freeconfirmed by Flathub
License: GPL-2.0 — Open source (copyleft)confirmed by Flathub
Open source: Yes
Commercial use: Yesconfirmed by Flathub
Account required: not documented
Credit card required: Noconfirmed by Flathub
Watermark: Not applicable
Ads: not documented
Platforms: Windows, macOS and LinuxEstablished by Linux: Flathub, Unspecified source · macOS: Unspecified source · Windows: Unspecified source
Publisher: Timothee "TTimo" Besset
Latest version: 1.6.7 (4 December 2022)
Latest activity: 17 January 2024

Overview

GtkRadiant is a game engine, available on Windows, macOS and Linux.

Overview written by LicitPro from the documentation published by the authors and the cited sources; we have not tried the resource ourselves.

Excerpts that establish this information

“GtkRadiant: The open source, cross platform level editor for id Tech games.” — official website, 10 November 2026

At a glance

GtkRadiant is completely free: it is open source software, and every feature is available without paying or subscribing.

Its licence (GPL-2.0) is a copyleft open source licence: you may use, study, modify and redistribute it, including commercially; modified versions must keep the same licence.

Strengths

Open source code
Commercial use allowed

Weaknesses

Few recent updates

About

GtkRadiant is the official level design toolchain for games powered by id Tech engines from id Software, and is maintained by a community of volunteers. GtkRadiant is powered by the GTK+ Project and released under a GPL license.

Description from Flathub — AppStream (Flathub)

Sources and checks

Facts collected from Flathub (credit card, publisher, licence, free status, platforms, commercial use, version) — 9 November 2026
Facts collected from Unspecified source (platforms) — 9 November 2026
Last technical check: 9 November 2026
Description from Flathub — AppStream (Flathub)

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