Diamond 5.1

Create and customize images representing molecular and crystal structures of specific materials. Generate visuals manually or access a set of functions to automatically create any arbitrary portion of a crystal structure from a basic set of such parameters as the cell, space group, atomic positions, etc.

Diamond is a program that allows you visualize diagrams of molecular and crystal structures with lots of tools and features to work with.
The program’s interface is somewhat confusing, given the huge amount of information it shows, although it shows help guides, which is rather useful when using it for the first time.

The PDF user’s manual is rather comprehensive. It also has web help links, and you can open assistance boxes from its interface. When using it for the first time, the program opens some of those boxes to help you create your first document; in sum, the program offers a very extensive help to users.

However, although the guides for using the program are rather comprehensive, it is not recommended for novices like me, since when using it, many of its features and tools can be perplexing.

This is a demo version, and thus, you need to pay a fee to get the complete version; however, it has a huge range of usable features so you can familiarize with it and decide if you want to purchase it or not. The price is not very affordable, but if you will use it professionally, it may worth the cost.