I've used ShaderWork's Advanced Library Manager since it came out years and years ago to replace Poser's own library system. I'm using Poser on linux and haven't bothered to install those pesky Adobe add-ons since they are only needed by the library browser.

There's no need to use Flash/Air components if one chooses not to do so. Third party library alternatives have been around for quite some time. So I don't really see what's the issue in the first place.