What is .GTM file extension?
File used by GreekToMe, a Greek New Testament study program; saves a New Testament Bible translation (e.g., KJV, ESV, etc.) provided for use with the GreekToMe software; contains both Greek words and their translations.
Although the translation data in GTM files is displayed in plain text in the program, the data is encrypted to ensure integrity when loading the file. Even changing the filename makes the file unusable.
You can see a list of software programs here on www.easyfileopener.org that can open this file type so that you don’t need to search for it on the web. You can then open your file with this extension using a software listed below.