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SPECIFICTION
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FreeTO vs TopOpt

FreeTO

github.com

TopOpt

topopt.mek.dtu.dk

Side by side

FigureFreeTOTopOpt
Price from—Free
Free plan—Yes
Free trial——
Open source—Yes
Web—Yes
Windows—Yes
macOS—Yes
Linux—Yes
iOS—Yes
Android—Yes
Self-hosted—Yes
Plans published04
Spec score · Generative Design Software6.8 (#18)8.2 (#2)
Founded20241829
PurposeFreeTO is open-source MATLAB code for initializing, optimizing, and post-processing free-form 3D topology optimization problems.TopOpt is an acronym for Topology Optimization, and the DTU group develops and applies density based topology optimization methods.

Plans

FreeTO

No plans published.

FreeTO pricing →

TopOpt

  • Free MATLAB and COMSOL photonics codesFree
  • Free MATLAB code for buckling optimizationFree
  • Free MATLAB code for minimum-compliance problemsFree
  • TopOpt apps and softwareFree

TopOpt pricing →

In their own words

FreeTO

FreeTO is free, open-source MATLAB software for initializing, optimizing, and post-processing free-form 3D topology optimization problems. It accepts STL files for a design domain and load-carrying subdomains, together with mesh controls and a target volume fraction. A structured hexahedral mesh is used, and optimized structures have smooth boundaries. Inputs can define supports, force magnitudes, up to nine additional load cases, and regions that must remain unchanged. SIMP is the documented default optimization method, and SEMDOT is also supported. Topologies can be mirrored across up to three specified symmetry planes. Results include compliance, volume fraction, density arrays, element counts, optimization histories, visual topology displays, and an optional STL file. Sample problems cover a GE bracket, airplane bracket, human hand model, and quadcopter. The repository uses an MIT license and other open-source codes. Its available optimizer is optimality criteria; the MMA implementation is commented out, with code available by email request.

Visit github.com

TopOpt

TopOpt has no write-up on Specifiction yet; its figures are above.

Visit topopt.mek.dtu.dk