Encrypted everywhere. Both client-to-server and server-to-server channels are fully encrypted. Users can be safe with end-to-end encryption — servers can't decrypt it.
Run by the community for the community. Kontalk is run by a community of volunteers offering servers and splitting costs among them. Go to the network web site »
Every bit of the software used in the Kontalk network, both server and client, is completely open source. Hosted by Github.
Kontalk relies on a network of servers run by volunteers to provide a stable and secure service for all of Kontalk users. Because of that, Kontalk will always remain free.
Kontalk uses your phone number to identify yourself among your contacts, without the need to remember user IDs or usernames.
Kontalk is based on rock-solid Internet standards, ensuring interoperability with other services.