The .ftw file extension is most commonly used by the Family tree Maker genealogy software application. Family tree Maker allows users to build and share family trees. The FTW files store the family tree data as well as the user settings and other project information.
The .ftw file extension is also used for FontTwister files and FormTool Pro form files.
Try a universal file viewer
File.org aims to be the go-to resource for file type- and related software information. We spend countless hours researching various file formats and software that can open, convert, create or otherwise work with those files.
If you have additional information about the FTW file format or software that uses files with the FTW suffix, please do get in touch - we would love hearing from you.