Cakewalk Bundle (CWB)

Cakewalk by Twelve Tone Systems (later Cakewalk, and now Roland) uses a "bundle" archive format to encapsulate all the files connected with a project of the Cakewalk Project (CWP) format. This is used when you want to back up or transfer an entire project with all its files, combined into one file. Older versions of Cakewalk used the WRK project format instead, with the BUN format for bundles.

Other Cakewalk file formats:
 * Cakewalk Dump Request Macro (.drm)
 * Cakewalk Instrument Definition File (.ins)
 * Cakewalk Sample Definition File (.sfz)

Links

 * Official Cakewalk site
 * Project files and bundle Files
 * Are Cake Walk Bundle files the Best Way to Save Everything?