.ctt - Windows Live Messenger Contact List
.dat - Generally text or binary datafile
.3dr - 3DMark result
.pst - Microsoft Office Outlook Personal folder file
.xml - XML document
.mpp - Microsoft Project file
.metadata_never_index - iPod file (Mac specific file)
.sys - Data file
file extension TRD - TrID file identifier filetypes definitions package
File extension TRD description:
Database of file type definitions used by TrID ( a software utility that can identify file types based on their binary signatures). It is saved as a separate file and can be updated by downloading new versions of the definitions library.
The main definitions package is named TrIDDefs.TRD and is loaded when the application is opened. Files selected by the user are checked against the definitions in the TrIDDefs.TRD file to determine the file type.
Mime type: application/octet-streamAssociated applications to file extension TRD:
Company / developer:
Marco Pontello
TrID is an utility designed to identify file types from their binary signatures. While there are similar utilities with hard coded rules, TriID has no such rules. Instead, it is extensible and can be trained to recognize new formats in a fast and automatic way.
TrID has many uses: identify what kind of file was sent to you via e-mail, aid in forensic analysis, support in file recovery, etc.
TrID uses a database of definitions which describe recurring patterns for supported file types. As this is subject to very frequent update, it's made available as a separate package. Just download both TrID and this archive and unpack in the same folder.
Because TrID uses an expandable database it will never be out of date. As new file types become available you can run the scan module against them and help keep the program up to date. Other people around the world will be doing the same thing making the database a dynamic and living thing. If you have special file formats that only you use, you can also add them to your local database, making their identification easier.