You're here because you have a file that has a file extension ending in .top. Files with the file extension .top can only be launched by certain applications. It's possible that .top files are data files rather than documents or media, which means they're not meant to be viewed at all.
what is a .top file?
A TopSolid design document file is generally classified as a data file, and these TopSolid Design Document Files are used to store CAD objects and drawings with one or multiple sections. These TopSolid design document files are used by the TopSolid software for the development of Project Data Management systems and CAD designs for multiple purposes, such as for Printed Circuit Board (PCB) designs and Building Information Management (BIM) projects. Digital geometrical 3D shapes, objects and elements of a CAD drawing or a project data management process designed using the TopSolid program or other supported CAD applications can also be stored in these TopSolid design document files. Custom data storage specifications are implemented into the content of a TopSolid design document file so it can be stored in the TOP file format. These TopSolid design document files are also integrated with binary and text formatting attributes as well as custom image compression standards used for these TOP files, which are affixed with the .top extension. Missler Software offers the TopSolid'Viewer program as freeware that can be used to open and view the content of these TOP files.
how to open a .top file?
Launch a .top file, or any other file on your PC, by double-clicking it. If your file associations are set up correctly, the application that's meant to open your .top file will open it. It's possible you may need to download or purchase the correct application. It's also possible that you have the correct application on your PC, but .top files aren't yet associated with it. In this case, when you try to open a .top file, you can tell Windows which application is the correct one for that file. From then on, opening a .top file will open the correct application. Click here to fix .top file association errors
applications that open a .top file
Missler TopSolid
Missler TopSolid
TopSolid is completely incorporated with Computer Aided Design & Computer Aided Manufacturing (CAD/CAM) software which is improved by the company Missler Software. This design document file is usually classified as a data file, and are utilized to save CAD objects and drawings with one or multiple sections. It enables users to design and manufacture their parts, by programming numerically controlled machines, using the same software. It is also included with binary and text formatting attributes as well as custom image compression standards utilized for TOP files, which have the .top extension. These document files are utilized by the TopSolid software for the improvement of Project Data Management systems and CAD designs for some purposes, such as for Printed Circuit Board (PCB) designs and Building Information Management (BIM) projects. The content of a TopSolid design document file are integrated with the implemented custom data storage specifications for the storage of the TOP file format. TopSolid Viewer was introduced by Missler Software as a freeware utilized to access and view the content of these TOP files.
Be careful not to rename the extension on .top files, or any other files. This will not change the file type. Only special conversion software can change a file from one file type to another.
what is a file extension?
A file extension is the set of three or four characters at the end of a filename; in this case, .top. File extensions tell you what type of file it is, and tell Windows what programs can open it. Windows often associates a default program to each file extension, so that when you double-click the file, the program launches automatically. When that program is no longer on your PC, you can sometimes get an error when you try to open the associated file.
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Find and repair file association errors preventing this file type from opening on your computer.