About Point Cloud Format

I've been searching point cloud file format.

First of all. PTS File Format (http://labs.blogs.com/its_alive_in_the_lab/2010/08/updated-point-cloud-for-3ds-max-now-available.html).
I found it on Autodesk Lab. I am not sure It's for 3dsmax?
This file format has number of points, point position(x y z), intensity value of point and point color.
It can convert ascii to binary. and It use kdTree for PointCloud.

• Number of points
• X Y Z Intensity value R G B

Next is PRT File Format (krakatoa).
http://software.primefocusworld.com/software/support/krakatoa/prt_file_format.php

Particle Bin File Format (Real Flow)
http://software.primefocusworld.com/software/support/krakatoa/bin_file_format.php

PTC File Format (RenderMan point cloud file)
Cloud (http://hosok2.com/project/cloud/cloud.htm)
Point cloud and Brick map (http://hosok2.com/project/bake3d/bake3d.htm)
Python Computer Graphics Kit have a point cloud function.
http://cgkit.sourceforge.net/doc2/pointcloud.html

Anyway, I think that Point Cloud express via RiPoint?