Files that contain the .spl file extension is commonly associated with the Macromedia FutureWave FutureSplash animator software. Files that contain the .spl file extension normally hold animated files that have been created by the software.
The Macromedia FutureWave FutureSplash software became Adobe Flash when Adobe bought out Macromedia.
The Infinity game engine also uses the .spl file extension. These SPL files that contain spell files that are used by the Infinity game engine.
Microsoft Windows has also been known to use the .spl file suffix. The SPL files used by Microsoft Windows contains printing spool files that assist in the printing of a user's documents.
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