About us
Terms of use
ProTOp - Efficient topology/shape optimization of real-life engineering parts
ProTOp - Lighting-fast FEA solvers for stress and eigenfrequency optimization
ProTOp - Fully interactive with progress visualization and at-any-time adjustments
ProTOp - Seamless transition from topology to shape optimization
ProTOp - Configuring and optimization of full 3D solid-shell-lattice structures
ProTOp - Advanced tools for mesh improvement, stripping, and localized refinement
ProTOp - Fully interactive mesh operations for a swift optimization process
ProTOp - Excellent for 3D print and conventional production methods


Current version:  6.2

Last build:  240417;  April 17, 2024

Get installer:  download page

Version 6.2 highlights

  • Reference node targeting in stress topology optimization; various reference node response values of individual load cases can now be used for targeting in topology optimization.
  • Improved response fields display; only selected volume regions and individual displacement components can be displayed now.
  • Updated mesh refinement tool.

Start evaluating ProTOp for FREE!  Either ...
□ Use EVALUATION license: just download, install, and run (limited to 50.000 FE nodes max)
□ Get TRIAL license: just download, install, request and activate license, and run (fully-featured)


  • A standalone high performance topology optimization software package
  • Input: FNF, INP, GEO, and DAT files, generated by PTC® Creo®, Simulia® Abaqus, SolidWorks® Simulation, and Siemens NX™
  • Advanced design options by efficient shell and lattice configurators with full 3D solid models
  • Fully interactive with excellent results and smoothing tools for direct 3D print

  • Take a look at a webinar on CAESS ProTOp usage, organized by Novedge (USA)
  • Title: FEA-Driven Design of Load-Carrying Structural Parts
  • Recording available at:

CAESS ProTOp in Action

The following material was kindly provided by Poclain Hydraulics d.o.o. with their consent to reproduce it here.

Topology optimization of a hydraulic valve

Initial assembly

Copyright © Poclain Hydraulics

Optimized part

  • Mesh size: 13.2 million elements
  • Configurators: 2 shells; 1 solid
  • Technological constraints: bi-uni-directional opening

Copyright © Poclain Hydraulics

Final assembly

Copyright © Poclain Hydraulics


Videos provided by Urs Simmler (GIA)

Webinar 2023-JUN: ProTop V6.2: Overview Topology Optimization & News

Webinar 2020-DEC: Generative design versus topology optimization - Creo & ProTOp

Webinar 2019-MAY: Topology optimization with CAESS ProTOp - Novelties in V6.0

Case studies

Loudspeaker holder

Loudspeaker holder - video

Hip implant in femur bone

Hip implant - video

GE Jet Engine Bracket

Oil pan eigenfrequency maximization

Oil pan - video


Shell and Lattice Structures FAQ

Topology Optimization Quick Guide

ProTOp Features Explained Briefly


ProTOp Basic Information

ProTOp Lattice Tools Information