List 3D Software (Freeware/Open Source)

[tkbd]

guillaumech,Welcome to Wings3D forum.
I tried a little your voxel editor,Goxel is simple and easy to use.
I was able to understand how to use most of the features in about 30 minutes.

And,a data exported to obj format by Goxel could correctly import in Wings3D.
In addition,It can be treated as a MONOLITHIC structure,So helpful.(It editable in Wings ...Although,using separate command after )
(And this is an important thing for treat the data at other 3D modeling softwares).

I hope that the development of your software continued success!!
Cheers!