.TOP File Extension

Gromacs Topology File

Developer Gromacs
3.4  |  7 Votes

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.

Open over 400 file formats with File Viewer Plus.Free Download

Programs that open TOP files


TopSolid Design Document

Developer Missler Software
2.3  |  4 Votes

A TOP file may also be 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

Verified by FileInfo.com

The FileInfo.com team has independently researched all file formats and software programs listed on this page. Our goal is 100% accuracy and we only publish information about file types that we have verified.

If you would like to suggest any additions or updates to this page, please let us know.