I use the free version of Fortify:

https://www.reddit.com/r/fortify/comments/57sude/fortify_154_free_version_update/

Here’s what some of the things look like:



It was originally made for Rust, which has a similar building system to Conan Exiles. Which is why it is lacking quite a few shapes that CE has. However it is excellent at planning floorplans and major structural shapes.