Blender Add-ons extend the export functionality
Blender needs them as zip file
OpenCTM Importer
Gitlab Repo ig.graphics.data.tools
/Importers/Blender/OpenCTM/bin/OpenCTM_.zip
NOTE: If deinstalling fails in Windows 10, disable the plugin, then restart Blender, then remove it. (https://developer.blender.org/T77837)
OpenCTM Exporter
Gitlab Repo ig.graphics.data.tools
/Exporters/Blender/OpenCTM/bin/OpenCTM_2.0.12.zip
ModelExporter
Gitlab Repo ig.graphics.data.tools
/Exporters/Blender/ModelExporter/bin/ModelExporter_1.1.0.102.zip
Installing a Plugin as example OpenCTM:
1) Open Blender (2.93 and newer)
3) Go to Edit → Preferences
4) Go to Add-Ons
5) Filter CTM
6) Remove Add-on OpenCTM after expanding
8) Install by selecting the Zip From Step 1
9) Enable new Add-on