CMU Window Manager bitmap image
File type: Bitmap image file
Files with cmu extension are used by Carnegie Mellon University. They include bitmap image data.
Found 2 different file type records with the same cmu filename suffix.
File type category:
Bitmap image file
Date updated: June 23, 2025
The cmu file extension is also used for one of the bitmap image formats created at Carnegie Mellon University (CMU). This file format can be viewed by XnView MP program.
Use XnView to view the cmu file format files.
Programs for viewing cmu files:
Multiplatform
File type category:
Various data file
Date updated: September 28, 2026
The Andrew Toolkit uses its own data-stream format to store documents and the objects embedded in them. A .cmu file may therefore contain more than plain text, including formatted text and other ATK objects.
ATK was developed at Carnegie Mellon University for creating, viewing, and distributing documents with mixed content. The format is associated with the toolkit rather than with a general-purpose office application.
Andrew Toolkit is legacy software designed for Unix systems with the X Window System. The format is no longer common, so files may require an existing ATK installation or an environment capable of running it.
Open a .cmu file with the Andrew Toolkit, using the toolkit's document viewer or editor. ATK was designed for Unix and X Window System environments.
Modern general-purpose applications usually do not recognise this format. If ATK is unavailable, the file may need to be opened in a compatible legacy Unix environment.
Open the file in ATK and use its available save or export functions to create another representation.
Conversion may not preserve embedded ATK objects or all formatting. Keeping the original .cmu file is recommended when the document must remain editable in ATK.
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