An SPD file is a note created by S Note, an advanced note-taking application developed by Samsung for use with Samsung mobile devices, such as Galaxy S and Galaxy Note. It contains a note, which may include typed or handwritten text, drawings, charts, audio, and images. SPD files replaced .SNB files.

Notes created with S Note can be exported to several formats, which include SPD, JPEG, plain text, and PDF. The notes can also be synced across multiple devices with a Samsung account. You can open SPD files with S Note installed on your device. You can also open SPD files on your computer by replacing the ".spd" extension with ".zip" to create a .ZIP file. You can then extract the contents with a Zip decompression program, such as Corel WinZip or Apple Archive Utility. Files stored in the SPD file include .PAGE, .BIN, and .DAT. NOTE: SPD files may be secured with 128-bit encoding if they are locked with a password. It is not possible to recover a lost password for an SPD file.

Acrobat document that has been sealed (or locked) using the SealedMedia Sealer; can only be opened by users with sufficient access rights; user authorization rights are stored on a License Server, which also tracks usage of the document.

NOTE: To view an SPD file, first unseal the document using Oracle SealedMedia Unsealer, then open the unsealed file in Adobe Acrobat.

File created by SPSS, an application used for statistical analysis; saves a custom dialog, which is a custom user interface component created by the user; enables statisticians to develop their own input forms for custom statistics functions.

Custom dialogs can be created using the Custom Dialog Builder window, which can be opened by selecting Utilities → Custom Dialogs → Custom Dialog Builder from the application menu. Dialogs can be previewed in this window by choosing File → Preview Dialog.... Before using a custom dialog with SPSS, you must first install it by choosing File → Install in the Custom Dialog Builder. The main SPSS application menu now will contain the new dialog in the location you specified using the Edit → Menu Location option from the Custom Dialog Builder window.