Mailo - Mailo is an email client where you can send and receive emails to and from anyone with an email address.

ShoutOUT - All in one business texting tool to send personalized alerts, promotions, reminders, short links and marketing campaigns, for any SMEs (hotels, restaurants, education, non profits, Woocommerce, banks, healthcare, agencies, supermarkets, weddings)

Horde - Horde Groupware is a free, enterprise ready, browser based collaboration suite.

Trumpia - SMS Marketing and Marketing Automation software for Mass SMS, internal communications & emergency alerts. #1 Text Messaging Service used by Fortune 500s.

HEY - Email at its best, new from Basecamp.

Clickatell - Simple, reliable mobile messaging cloud.