They can all work with Poser but you need to find and stick with a work flow. As someone else has mentioned there is an inter poser plugin, how well it works I don't know. Mostly you will have scaling and material issues...they are usually easy to overcome though. <<

I can't recommend InterPoser Pro highly enough.

One of the nice things about Cinema 4D and InterPoser Pro is that, if you WANT to use it strictly for using Cinema 4D as a renderer for Poser and DAZ content, you can. It allows you to load and pose library items within Cinema 4D without the need for passing them through Poser.

For content development, it makes things a lot easier because you can also dial in the character's morphs and morph your clothing around them. I also recommend Spanki's Riptide plugin (there is a free version available) to export the OBJ files out to Poser scale.

Not sure if IPP will be updated to support the new Poser 8 rigging features, but other than that it is as close to perfection as you can get for using content. 8-)