XYZmaker is described as '3D modeling software designed for beginners in 3D printing; it provides a model library and several tools to generate different shapes and objects easily' and is an app in the Photos & Graphics category. There are more than 50 alternatives to XYZmaker for a variety of platforms, including Windows, Mac, Linux, Online / Web-based and Android. The best alternative is Blender, which is both free and Open Source. Other great apps like XYZmaker are SketchUp (Freemium), MakeHuman (Free, Open Source), Wings 3D (Free, Open Source) and Autodesk Maya (Paid).
SketchUp (formerly Google Sketchup) is a 3D modeling computer program for a wide range of drawing applications such as architectural, interior design, civil and mechanical engineering, film, and video game design—and available in a freeware version, SketchUp Make, and a paid...
MakeHuman is an interactive modelling tool for creating realistic 3D human characters. These models can be exported to several computer graphics and animation platforms including Blender, Unity 3D, Unreal Engine, OpenSim and Second Life.
Wings 3D is a subdivision modeler inspired by Nendo and Mirai from Izware. It is possible to assign materials, vertex color, UV coordinates and textures, but there will be improvements in those features before Wings goes 1.0.
Sketchfab is the first web service to publish interactive 3D content online in real-time without plugins. Every new format has its global platform: videos have Youtube, photos have flickr, sounds have Soundcloud... Now 3D files have Sketchfab.
Rhino can create, edit, analyze, document, render, animate, and translate NURBS* curves, surfaces, and solids, point clouds, and polygon meshes. There are no limits on complexity, degree, or size beyond those of your hardware.
pixiv has released "VRoid Studio", a character maker that allows users to create, in easy steps, 3D model characters which can be used in various VR\AR platforms as well as the production 3DCG animation and games.