*.bones
About
Stores the settings of bones. Used in the X-Ray SDK and is the source format used to facilitate setting up skeletons in *.object files. The format has these features and limitations:
- Saving bone shape information is supported
 - Bone Parts saving is supported
 - Bone transformations are not stored in this format. Only game settings are stored
 
Programs
Blender X-Ray Addon
Blender X-Ray is an addon for the Blender that is designed to import/export 3D models and animations from S.T.A.L.K.E.R. (X-Ray Engine).
IX-Ray SDK
SDK or Software Development Kit helped the developers of the original trilogy and the modders to develop the game itself.
X-Ray Export Tool (Object Tool)
Tool for fast editing and exporting raw S.T.A.L.K.E.R. formats.
Ogf Editor by ValeroK
Tool for working with *.ogf and *.dm format.