CSP File

What are CSP files and how to open them

Are you having problems opening a CSP file or are you simply curious about its contents? We're here to explain the properties of these files and provide you with software that can open or handle your CSP files.

What is a CSP file?

CSP files have multiple uses, and Aladdin 4D Spline is one of them. Read more about the other uses further down the page.

Aladdin 4D Spline

These CSP files contain the 3D graphics and animations created in Aladdin4D, a 3D modeling, and rendering program. This program was developed for AmigaOS, the operating system for the Amiga home computer popular in the 1980s and 1890s. You can create logos, you have access to morphing capabilities, you can simulate various effects, and you have access to spline animation controls.

How to open CSP files

Important: Different programs may use files with the CSP file extension for different purposes, so unless you are sure which format your CSP file is, you may need to try a few different programs.

While we have not verified the apps ourselves yet, our users have suggested ten different CSP openers which you will find listed below.

Last updated: September 19, 2026

All known file formats using extension .CSP

While Aladdin 4D Spline is a popular type of CSP-file, we know of 6 different uses of the .CSP file extension. Different software may use files with the same extension for different types of data.

AudioZip encoded audio

These CSP files contain the lossless compressed audio files created in AudioZip, an audio compression software developed by Nanyang Technological University in Singapore. CSP files have high-quality playback.

CASLwin executable

These CSP files, created in CASLWIN (an obsolete software used to create and test PalmOS applications on your desktop), can be then transferred to the targeted device after creation.

Cinespace LUT

Cinespace LUT files store lookup tables defining color transformations used for image and video grading. They can express both one-dimensional (1D) channel remapping and three-dimensional (3D) cube data. These files are created by Rising Sun Research's cineSpace software and related tools. They enable defining intricate color curves (pre-LUTs) before applying a 3D color cube, allowing customized mapping of input levels to output colors.

A Cinespace LUT file begins with a header identifying the version and whether the LUT is 3D or 1D. After that comes an optional metadata block carrying user-oriented information such as comments or titles. Then come pre-LUT sections for red, green, and blue channels, each allowing unevenly spaced input values and outputs normalized between 0.0 and 1.0. Following those is the main LUT data: for a 3D LUT this forms a regular RGB cube detailed in three dimensions; for a pure 1D LUT it consists of a list of floats defining the channel response directly.

The header consists of the ASCII identifier CSPLUTV100 followed by a line with either "3D" or "1D" to specify the LUT type. Metadata entries (between BEGIN METADATA and END METADATA) are freeform, but only "conditioningGamma" is used by some tools to adjust input domains. Pre-LUT sections are arranged for each channel: first a count, then input values (floats, not limited in range), then output values (floats between 0.0 and 1.0). After three such channel sections comes the core LUT - either an axis size triple for a 3D cube followed by that many RGB triples, or a length plus values for a 1D LUT.

Creative Signal Processor Microcode

Creative Signal Processor Microcode files store firmware for the programmable audio-processing chip on certain Creative Technology Sound Blaster cards. These files supply the microinstructions that enable features such as speech synthesis, PCM encoding/decoding (e.g. A-law, u-law, IMA ADPCM), QSound spatial audio, and similar hardware-accelerated audio effects. They are generated by Creative and shipped with firmware or soundcard drivers, then loaded into the CSP (Creative Signal Processor) chip for playback or recording.

During system setup or when an application requests an audio codec, the operating system's Sound Blaster driver or firmware utility loads one of these microcode files into the CSP chip. Once loaded, the CSP interprets encoded PCM streams or input commands according to the microcode's functions, providing effects or format conversion in hardware rather than software. Utility programs on Linux such as cspctl can inspect, load, unload, or switch among different codecs contained inside the microcode file.

Internally each microcode file begins with a RIFF header followed by the ASCII string "CSPiver", then contains a LIST section and "funcdesc" and "effc" identifiers that declare codec functions and effect control sections.

WebCell Script Project

WebCell Script Project files store projects for the WebCell Script development tool made by Paterson Technologies. They are created when a user builds or edits a WebCell Script Project, and hold all configuration, script, synchronization settings, device identifiers, and other project metadata. These files are used by WebCell to organize, save, and transfer complete scripting or automation projects, often involving device-based deployments or versioned scripts.

The creator of these files is WebCell Script, a product of Paterson Technologies. WebCell Script writes files in this format when programs are saved or synchronized across devices. The WebCell Script software reads them to reload or deploy the project: compiling scripts, managing device-specific parameters such as DeviceID and DeviceVersion, and resolving paths like RelativePath or FullPath. The project version (ProjVersion), synchronization settings (SyncSettings, SyncType), and data like EEPROMData are typical contents.

Internally the file is XML-based. It begins with the signature "<?xml version=\"1.0\" encoding=\"utf-8\"?>" at the start. The root element or namespace contains "CellScriptProject xmlns" and many fields including DONOTUPDATEPROJ, DEVICEVERSION, DEVICEID, RELATIVEPATH, SYNCSETTINGS, PROJVERSION, EEPROMDATA, FOLDERSYNC, LASTFOLDER, SYNCTYPE, among others. Common markers like HTTP, WWW.PATERSONTECH.COM, and XMLSCHEMA-INSTANCE also appear. These keywords help identify the format.

Various apps that use files with this extension

These apps are known to open certain types of CSP files. Remember, different programs may use CSP files for different purposes, so you may need to try out a few of them to be able to open your specific file.

Help us help others

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