There are 2 file types use the .TC file extension:
1. TrueCrypt Volume
Virtual encrypted disk created by TrueCrypt, an open-source disk encryption program that creates real-time (on-the-fly) encrypted volumes.
Updated: January 8, 2021
2. Tellico Collection File
Data file saved by Tellico, a Linux KDE program used to manage collections of information; may contain data such as titles, authors, cover images, genres, and publication years; can be used for tracking information about books, videos, music, video games, coins, trading cards, and wines.
Updated: October 25, 2010