CLU

clu icon

Broken Sword 2 dialogue data

File type: Game file

A clu file extension is related to the Broken Sword 2, an adventure computer game. A clu file stores dialogs.

Found 5 different file type records with the same clu filename suffix.

What is clu file?

File type category:
Game file

Date updated: April 23, 2018

Record marked as obsolete and not updated for a long time.

The clu file extension is also used in Broken Sword 2, an adventure game relased in 1997

The clu file contains dialogues, text data used in the game.

Example: TEXT.CLU

How to open clu file?

You cannot open this file type manually, it is accessed by the game automatically.

How to convert clu file?

These games files cannot be converted to anything else. However, sometimes modding.

Suggested software to open clu file:

Associated software actions with the clu file

Software applications that handle other tasks involving clu files:

CLUCalc CLUScript script

File type category:
Source code and script file

Date updated: April 18, 2019

Record marked as obsolete and not updated for a long time.

The clu file extension is associated with the CLUCalc a software tool for 3D visualizations and scientific calculations available for Microsoft Windows and Linux.

The clu file stores script written in CLUScript for CLUCalc.

How to open clu file?

Use CLUCalc to open *.clu files.

How to convert clu file?

Probably cannot be converted to other formats.

Suggested software to open clu file:

CLUCalc icon
CLUCalc
A 3D visualisation and science calculation tool

Associated software actions with the clu file

Software applications that can open clu files:

Microsoft Windows

no icon available CLUCalc

Software apps that create clu files:

Microsoft Windows

no icon available CLUCalc

Software applications that handle other tasks involving clu files:

Microsoft Windows

no icon available CLUCalc

Clusse node file

File type category:
Various data file

Date updated: September 27, 2026

Clusse is an MS-DOS software package that provides a DX cluster server for amateur packet radio. Its CLU file stores node data used by the software.

How to open clu file?

Open a CLU file with Clusse on MS-DOS. The file is intended for use by the Clusse software and may not produce readable results when opened in a general text or file viewer.

Suggested software to open clu file:

Associated software actions with the clu file

Software applications that handle other tasks involving clu files:

Microsoft MS-DOS

IBM PCI cryptographic coprocessor code file

File type category:
Encoded and encrypted file

Date updated: October 3, 2026

The IBM 4758 PCI Cryptographic Coprocessor provides a tamper-responding environment for cryptographic functions and security-sensitive custom applications. It supports DES, RSA and DSA processing, secure key storage and sensitive computation while off-loading cryptographic work from the host server.

The coprocessor contains a 486-class processing subsystem, specialized cryptographic electronics, a cryptographic-quality random number generator and secure persistent storage. Apart from a small bootstrap loader, its software is loaded from the host system. The coprocessor accepts only digitally signed software that it has validated, including software supplied by IBM, other vendors or developed with IBM toolkits.

IBM supplied a PKCS #11 version 2.01 implementation and an IBM Common Cryptographic Architecture implementation for the 4758. These provided standard cryptographic services and a base for financial-industry processing and custom applications. The coprocessor was used with Windows NT, Windows 2000, AIX, OS/400, z/OS and OS/390 systems, and provided high-security cryptography for IBM server platforms and many personal computers.

The IBM 4758 hardware was certified under FIPS PUB 140-1 at levels 3 and 4 and received German ZKA approval for critical financial transaction processing on z900 servers. CLU files belong to this legacy IBM cryptographic-coprocessor environment and are not a general-purpose interchange format.

How to open clu file?

A clu file is not intended to be opened with a text editor or a general-purpose file viewer. It must be handled by the IBM 4758 support software and loaded to a compatible IBM PCI Cryptographic Coprocessor.

Use the IBM 4758 tools on the supported host system, such as Windows NT, Windows 2000, AIX, OS/400, z/OS or OS/390. The coprocessor validates the required digital signature before accepting the code.

How to convert clu file?

There is no meaningful general-purpose conversion for an IBM 4758 clu file. It is executable code for a specific cryptographic coprocessor, not a document or data format.

If changes are required, the code must be rebuilt from its original source with the appropriate IBM development tools and signed for the target coprocessor. Do not expect renaming or exporting the file through an ordinary converter to produce a usable alternative format.

Phantasmagoria 2 8-bit playback pallette

File type category:
Game file

Date updated: February 13, 2019

Record marked as obsolete and not updated for a long time.

The clu file extension is associated with the Phantasmagoria 2, an adveture computer game. Created by Sierra. Sierra was acquired by Activision Blizzard.

The clu file contains 8-bit playback pallette.

Most likely some old format without support. No further information could be found.

Suggested software to open clu file:

Associated software actions with the clu file

Software applications that handle other tasks involving clu files:

Microsoft Windows

Related file extensions