.CLO

.CLO file extension

This is the basic program to work with .CLO extension

3D Canvas

3D Canvas3D Canvas Object Library

3D canvas is a free tool to create different types of 3D modeling and animation projects for beginners and experts alike. It includes really useful features, like real-time rendering, more than 25 objects (primitives) to choose from, various light settings, shape building, skeleton effect, inverse styles, various painting tools, simulated shadows, smoothening effect, and many more... (more)

The program works with the following extensions: clo, clt

.CLO extension is also supported by the following programs:

Petz

PetzClothes File

LEd

LEdLaTeX class options file

Design

DesignDesign File type

Easy View - Crystal Reports Viewer

Easy View - Crystal Reports ViewerEasy View Files

Is a great solution for distributing and viewing your Crystal Reports files.
WinEdt

WinEdtLaTeX Class Option

Edit an create documents with high typographic quality.