Secure messaging service for mobile devices

Welcome to the Hisser website

Hisser is a fully open source messaging service for mobile devices, but more secure than all others.


All messages are encrypted to ensure only the right person will read it. Anyone intercepting a Hisser message won't be able to tell who the message is for and who has sent it.

Spam protection

The built-in spam protection makes sure only the people on your contact list will be able to send you a message.

Distributed network

Hisser allows you to run your own server and to manage your own users. This makes you completely independent from any organisation to use Hisser.