SendOut - Affordable email marketing for bloggers and influencers
Yammer - Yammer is a leading enterprise social network used by more than 200,000 companies worldwide, including 85% of the Fortune 500, to get work done smarter and faster. Sign Up Today.
Mailblast - Email marketing on a budget using Amazon SES
MS SharePoint - Share, organize, and discover information with Microsoft SharePoint. Learn about SharePoint Online, OneDrive for Business, and Apps for SharePoint
rasa.io - Get more from your email list.
Communifire - Enterprise Social Collaboration Software