3D

OGRE (Object-Oriented Graphics Rendering Engine) is an open-source scene-oriented, flexible 3D engine.

A good software for creating 3D printing models

It has both node based and painting in 1 interface and can handle all the UDIMS. the texture projection methods are great ass wel as their keybinds. The UI doesnt trick you into thinking it wil/can do something it can not being delibraty confuzing like adobe realy loves.

GFX is a device independent graphics library primarily intended for IoT MCUs but not limited to that. GFX is equally suited for TFT/LCD, OLED and e-paper displays. It also supports raster font and TrueType fonts

Really easy to learn you can make amazing game with it good choice for new or pro an amazing engine

Been using Nevercenter Silo since 2004

I could try this without creating an account. Found it easy to use.