Template file (Harvard Graphics, Microsoft Access, Cakewalk Audio and others)
TPL is a file extension for a template file format. A TPL file includes style data and other information required to create a specific document.
Programs that use the TPL file extension for template files include ACT!, BestAddress HTML Editor, CakeWalk Audio, Canvas 7, DataCAD, fKey Template Designer, Harvard Graphics, Microimages, Microsoft Access, NoteTab, Page Express, PHP Development, SignIQ, TextBridge, Timeslips TSImport, and Ulead iPhoto Express.
TPL files open in any program that created them.
Learn more about TPL files:
Pareto Logic explains more about template files.
See template-related questions or ask your own at ITKnowledgeExchange.com.