.TOPPRJ File Extension
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What is a TOPPRJ file?
A TOPPRJ file is a CAD design package file used by TopSolid, a software solution for managing CAD projects. It may contain references to part and assembly design documents, bill of materials documents, drawing drafts, and exploded part design documents. TOPPRJ files are used for consolidating and organizing CAD project documents.
By default, TOPPRJ files are stored within subdirectories of TopSolid's TopSolidPdm directory (which is created by default as C:/TopSolidPdm/). The software's user interface encapsulates access to all project files, so TOPPRJ files are not accessed directly by the user.
NOTE: TopSolid uses an embedded Microsoft SQL Server to store project documents and data.