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NeL is the heart of the project. It's purpose is to abstract platform functionality, and implement everything that is necessary in a game engine, that is unrelated to game-specific elements. The NeL project is further divided into a Misc library (NeL_Misc) which is the base requirement of all other NeL libraries, 3D (NeL_3D), Sound (Nel_Sound) and Net libraries providing common game engine related functionality. It contains also a library called Georges which handles data sheets, the PACS library (NeL_Pacs) that does collision detection, and the Ligo library (Nel_Ligo) for building environments from template building blocks. There is also a whole range of tools and samples, to operate with and to demonstrate the NeL library.
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Ryzom consists of all the source code which implements the Ryzom gameplay, as well as several highly optimized MMORPG specific algorithms. It utilizes both NeL and NeLNS. It consists of a Common library, containing all the code that is shared between the server and client, and of cource the Server and Client projects themselves. A range of Ryzom specific tools are also included. The Server project is then further divided into the various services which are needed to build a server, which are described on the server architecture page.
Snowballs is a small prototype game, used to demonstrate the features of NeL and NeLNS. Like Ryzom it contains a Server and Client project.