CMS for Lectora titles

This goes out to everyone using Lectora - the company I work for has trainer/developers in 5 different countries and we need to share raw content files. What type/s of programs do people use to do this? The main catch is we need to conform to FDA regulations which requires version control. Another catch is it needs to work with other file types as well; ppt, captivate, presenter, pdf, office, etc. All help appreciated!!!