Sitecore - Sitecore A/S has produced the Sitecore content management system since 1999.
Hiver - Manage Customer Support, Sales and Projects right from your Gmail inbox. Collaborate with Shared Labels, Shared Contacts, email notes, email reminders and email templates
Salesforce Service Cloud - Service Cloud integrates customer service with social networks and provides a self-service customer portal and knowledge base system.
Clean Email - Clean Email is an online service that empowers you to take control of your mailbox.
Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
MailClark - The Slack bot for external communications