Facebook for Business - Facebook Business gives the latest news, advertising tips, best practices and case studies to meet the business goals.
Tweedle App - Notion is nice but sometimes all you need is an app like Tweedle.
SocialPilot - SocialPilot is an app designed to help businesses and professionals with social media marketing.
Plume - App for writing documents, scripts, books and more.
Buzzstream - Build Relationships. Build Buzz. Web-based software that helps the world’s best marketers promote their products, services and content.
Tweetbot - Sync your timeline across your iPhone, iPad, and Mac. Mute tweets by user, hashtag, tweet source, or keywords (including regex). 3rd Party support for image, video, read later, and timeline sync services.