.ACF File Extension
File Type 1Steam Application Cache File
What is an ACF file?
An ACF file is a cache file used by Valve Steam, a software package used for downloading games. It saves information related to the downloaded software and is used for the original download as well as game updates.
File Type 2X-Plane Aircraft File
.ACF File Association 2
Aircraft file used by X-Plane, a realistic flight simulator for pilots and simulator hobbyists; contains data that describes the properties of the aircraft, such as engine power, flight physics, mass properties, and limits.
You can create an ACF file using Plane-Maker, which is a utility that comes with X-Plane. However, Plane-Maker does not enable you to create a 3D model, it is only used to determine the layout of basic aerodynamic shapes and properties of the aircraft. You can use the AC3D application with the X-Plane plugin to create a 3D model in the X-Plane OBJ format.
NOTE: Before version 10 of X-Plane, the ACF file contained aircraft data in binary format. It now contains data in text format.
File Type 3Agent Character Data File
.ACF File Association 3
Data file that describes a character created for Microsoft Agent, an interactive animation program; contains character data that can be loaded over the HTTP (or Web) protocol; saved along with a corresponding .ACA file, which contains animation data for the character.
NOTE: Microsoft Agent has been discontinued with the release of Windows 7.
File Type 4Adobe Photoshop Custom Filter File
.ACF File Association 4
Convolution kernel file created by Adobe Photoshop, an image-editing program; contains a NxN kernel matrix of values used to manipulate the neighboring pixels surrounding a given pixel; can contain positive and negative values as well as mathematical expressions.
Convolution kernel matrixes can be used for blurring, sharpening, embossing, or performing other raster graphic operations to an image; once saved in an ACF file, they can be repeatedly applied to images.