HARFANG 3D is described as 'HARFANG® 3D is a framework for 3D & 2D application development. It can manage & display complex 3D scenes, sound, music, access VR devices such as the HTC Vive, Oculus Rift, Lenovo Explorer'. There are more than 10 alternatives to HARFANG 3D for a variety of platforms, including Windows, Mac, Linux, Online / Web-based and iPhone. The best alternative is Godot Engine, which is both free and Open Source. Other great apps like HARFANG 3D are Unity (Freemium), Unreal Engine (Freemium), CRYENGINE (Free Personal) and Torque 3D (Free, Open Source).
Godot is a fully featured, open source, MIT licensed game engine. It focuses on having great tools, and a visual oriented workflow that can export to PC, Mobile and Web platforms. It is a cross-platform 2D and 3D game engine and game development IDE.
Unreal Engine is a professional suite of tools and technologies used for building high-quality games across a range of platforms. Unreal Engine’s rendering architecture enables developers to achieve stunning visuals and also scale elegantly to lower-end systems.
Open 3D Engine (O3DE) is an Apache 2.0-licensed multi-platform 3D engine that enables developers and content creators to build AAA games, cinema-quality 3D worlds, and high-fidelity simulations without any fees or commercial obligations.
One framework for creating powerful cross-platform games. The spiritual successor to XNA with 1000's of titles shipped across desktop, mobile, and console platforms. MonoGame is a fully managed .NET open source game framework without any black boxes.
GameSalad Creator is an authoring tool developed by GameSalad, Inc. (formerly Gendai Games) aimed primarily at non-programmers for composing games in a drag-and-drop fashion, utilizing visual editors and a behavior-based logic system.
Leadwerks Game Engine provides the smoothest learning curve to take you from beginner to full-fledged game developer. Use the visual editor and the flowgraph system to set up game interactions without code. Use Lua to write your own game scripts.