| RedWindow | wrapper for UserView. Convenience class that replaces Window + UserView |
| RedVector | vector of any dimension |
| RedVector2D, RedVector3D, RedVector4D | optimised vector objects of specific dimensions |
| RedSpring | helper class for keeping track of springs |
| RedUniverse, RedWorld, RedObject, RedPendulum, RedAgent, RedHiddenObject, RedFood, RedRock, RedBoid, RedParticle, RedOscillator, RedOscillator2 | fundamental objects in the redUniverse toolkit |
| Red3D, Red3DBox, Red3DLine, Red3DPlane, Red3DPoint, Red4D, Red4DTesseract | graphical shapes |
| RedFingerprint, RedIFS, RedKMeans, RedLSystem, RedLTurtle, RedMandelbrot, RedMRCM, RedPerlin | additional classes |