SNAP allows forsocial networks, and some of the more minor ones too. Not only that, it integrates with other blogging platforms (like Blogger and Tumblr) for added functionality or cross-posting between sites. Facebook comments can even be automatically imported as WordPress comments!
The lone downside is that only platforms that don’t require an API Library setup are supported by the free version. If you want to integrate with Googl or Pinterest, you’ll have to pay a yearly fee for the “Pro” version.