Welcome to the Secure Instant Messenger and Phone

Simphone is a new peer-to-peer application, which allows you to communicate with anyone else who uses Simphone.

Why should you use Simphone?

• it supports secure audio calls, file transfer and encrypted chat;
• 256-bit cryptographic security: no third parties can read your communications over the internet;
• zero-configuration and portable: no need to install or configure anything, just run it;
• completely decentralized: you do not register anywhere and do not depend on any company;
• fully open-source (LGPL) without any backdoors or advertisements;
• written entirely in C and C++, which makes it reasonably fast and small;
• stable and reliable: the GUI is simple and familiar, striving to provide a commercial level of quality.

Simphone also offers the following optional features:

• can be hidden from your desktop if so desired (stealth mode);
• can work together with the TOR network to anonymize your IP address;
• or it can work together with DynDNS (including OpenNIC support).

Obtain Simphone at the DOWNLOADS page and take your communication security into your own hands.

If you are a developer, technically-minded or simply curious, please also check out our documentation page.

Questions or comments? Please contact us at info@simphone.org