Caliopen is an open source email and communications platform focused on privacy and encryption. It was created as an alternative to mainstream email providers like Gmail and Outlook that may use personal data for advertising or other purposes.
Some key features of Caliopen include:
By handling encryption and data storage itself rather than relying on third parties, Caliopen aims to give users more control and ownership over their communications and online privacy. The tradeoff is that as a newer platform it lacks some features and seamless integration with existing email services. But for users prioritizing security and privacy, Caliopen provides an intriguing open source alternative.