Horde - Horde Groupware is a free, enterprise ready, browser based collaboration suite.
Synthesio - Synthesio is a social intelligence tool or a marketing software that is specially made for the purpose of social media monitoring and social analytics.
Roundcube - Web-based IMAP email client
TitanMLM - TitanMLM is a modern multi-level marketing management software that allows businesses to manage their operations from a single platform.
Mailo - Mailo is an email client where you can send and receive emails to and from anyone with an email address.
Swift Social - All-in-One Social Media Growth and Management Tool