.TOP File Extension

File Type 1

Gromacs Topology File

Developer Gromacs
3.4  |  7 Votes
Category Data Files
Format Text

What is a TOP file?

Data file created by Gromacs, a molecular data analysis application; contains a molecular topology, which formally describes the structure of a molecule; created by pdb2gmx, a program that generates topologies from Protein Data Bank (.PDB) and Residue Topology Parameter (.RTP) files.

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Programs that open TOP files

Updated August 3, 2011
File Type 2

TopSolid Design Document

Developer Missler Software
2.3  |  4 Votes
Category CAD Files
Format N/A

What is a TOP file?

A TOP file is a CAD file created by TopSolid, a program used for CAD design and PDM (product data management). It contains a CAD drawing, which is comprised of one or more parts. Each TOP file includes the 3D geometry of the part models and may include Bill of Materials (BoM) information as well.

How to open a TOP file

TOP files can be viewed with TopSolid or Missler's free TopSolid Viewer.

Programs that open TOP files

Updated March 22, 2022

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