Is Artifactory well suited for C/C++ artifacts targeting Win, Linux and OS X platforms? E.g. .lib, .exe, .a, .so, .dll

Of course. Artifactory is well-suited for any binary file (i.e. not text), and .lib, .exe, .a, .so and .dll are all binaries. We don’t have a special type of repository for those files because the repository types are per indexing system; not per file type. It’s really about which tool you use to deploy and resolve those files. For example, if you use Gradle, you’ll need to a repository in Maven format, or if you just issue HTTP calls from your scripts, a Generic repo will be the best fit.