FTL File - opening and understanding

Did your computer fail to open a FTL file? We explain what they are used for and recommend software that we know can open or otherwise handle your .FTL files.

What is a FTL file?

A .FTL file is a Family Tree Legends data file. Through our analysis of FTL files, we know that one use of the format is Family Tree Legends data. We have not yet described in detail what these files contain and what they are used for, but our team is working tiredlessly through thousands of file formats. We'd love hearing from you if you have information about the format.

How to open FTL files

You will need a program compatible with the specific file you are trying to open, as different programs may use files with file extension FTL for different purposes.

While we have not verified the apps ourselves yet, our users have suggested 4 different FTL openers which you will find listed below.

Other file formats using extension .FTL

While Family Tree Legends data is a popular type of FTL-file, we know of 2 different uses of the .FTL extension.

The FTL file extension indicates to your device which app can open the file. However, different apps may use the same file extension for different types of data. So a FTL opener may not be able to open all kinds of FTL files. In this case, look through both formats to make sure you find the best suited FTL viewer.

Faster Than Light mod

Through our analysis of FTL files, we know that one use of the format is Faster Than Light mod. We have not yet described in detail what these files contain and what they are used for, but our team is working tiredlessly through thousands of file formats. We'd love hearing from you if you have information about the format.

While we have not verified the apps ourselves yet, our users have suggested 4 different FTL openers which you will find listed below.

Various viewers for this file format

These apps are known to open certain types of FTL files. Remember, different programs may use FTL files for different purposes, so you may need to try out a few of them to be able to open your specific file.

Family Tree LegendsFamily Tree LegendsUser submitted
Family Tree Legends - Starter EditionFamily Tree Legends - Starter EditionUser submitted
fuzzyTECHfuzzyTECHUser submitted
FuelTech DataloggerFuelTech DataloggerUser submitted
We have not verified any software that we know for certain will work with FTL-files on Mac. If you know one, please use the 'Suggest a program' link below and tell us about it!
We have not verified any web services that we know for certain will work with FTL-files. If you know one, please use the 'Suggest a program' link below and tell us about it!