WriteRack
We all know that twitter is only limited to 140 characters per post. WriteRack will help you make a series of tweets without the time-consuming manual process. You just have to right your whole tweet in this application, then WriteRack will do the posting all at once.
Paper Gear Editor
This tool will allow you to hire an editing team to proofread, check and/or format your blogs, articles, social media contents, and other documents for your business.
Mention
This app will allow you to keep track of what people are talking about your brand so you can react quickly. It has alerts so you can see your mentions directly.
Pagemodo
This will help you create fun and interesting visual elements and customized features that will encourage audience interaction. It will also allow you to schedule posts on your social media accounts.
Hootsuite
This will allow you to manage more than one social media accounts, all in just one interface.