What is smqueue... good question!
It's an application, its not just a tool, it's is the whole box and dice! 

When we finish all the functionality it will give people the one place to view and share all your social media content in many different ways, as well reply and chat with others. Along with the ability to read, group and reply to message from Twitter, Facebook and LinkedIn. The easy of uses and the able to see multi accounts in one place will lead to you saving time and staying connected 24/7.
The content sharing will not just be limited to Twitter, Facebook and Linkedin over the coming months as other API become available if there demand from smqueue users they will be review and included.