What is CTF? What Opens a CTF? File Format List from WhatIs.com

File Extension

CTF File Format

Symphony Character code translation

CTF is a file extension for a code translation file format used by Lotus Symphony Character, a free office productivity suite for producing documents, presentations and spread sheets. Lotus was acquired by IBM.


Learn more about CTF files:

See ‘IBM Lotus Symphony takes on Office, other desktop applications’ by Colin Steele at Search IT Channel.

Search for answers to CTF-related questions at IT Knowledge Exchange.

Visit the Lotus Symphony web page.

This was last updated in August 2010
Editorial Director Margaret Rouse

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