| Still Picture Interchange File Format | |
| Sling Media | |
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File with a .SPF extension contains a collection of shortcuts of TV stations and channels. These files are used to store user preferred TV stations.
SPF files are created and stored with the PC Slingplayer software, which communicates with the Slingbox DVR device which enables display and recording TV channels on a computer.
Windows
Mac OS
| .a2theme | Aston 2 Theme Format |
| .acb | Adobe Color Book Format |
| .acbl | Adobe Color Book Format |
| .aco | Adobe Photoshop Color Palette And Swatches Format |
| .acrobatsecuritysettings | Adobe Acrobat Security Settings Format |
| .acrodata | Adobe Acrobat Data Format |
| .acv | Adobe Photoshop Colour Curves Format |
| .acw | Microsoft Accessibility Wizard Format |
