Communifire - Enterprise Social Collaboration Software
Final Draft - Use your creative energy to focus on the content; let Final Draft take care of the style.
Workplace by Facebook - Connect everyone in your company and turn ideas into action.
Celtx - Celtx is a scriptwriting software platform with applications in a wide range of mediums but that specializes in helping screenwriters.
DigitalChalk - Online Training Software and Learning Management System (LMS)
Scrivener - Scrivener is a content-generation tool for composing and structuring documents.