After struggling with
*.3ds files, which I could not export as I wanted, and
*.obj files for which I haven't found an available library, I continue the search for a file format for my little game engine.
I heard about OpenCTM which sounds like a promising solution to me. It's just for storing vertices but I could totally live with that. And I like the API which is quite similar to the OpenGL api. It also comes with a viewer and importer/exporter.
But of course I wouldn't like to rely on a dead file format. According to what I've seen on Github, the last change was at the beginning of 2010. So my question is if OpenCTM is sill under active development and I could therefore use it without doubt in my game engine.