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

encryptomatic - encryptomatic is a smart email encryption software which provides tons of tools in encryption protocols for secure communication and business transaction.

Roundcube - Web-based IMAP email client

Cryptzone - Cryptzone is a cyber-security platform which gives different solution for a potential client to integrate their business with this web-based service and save their business transaction from malware attacks, internal and external threats, it gives a …

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

Protected Trust - Protected Trust works to enable businesses to experience high productivity and security with Microsoft 365 and Surface.