Simphone is a secure and private open source peer-to-peer Instant Messenger.

- supports secure voice audio calls, file transfer and encrypted chat
- zero-configuration and portable: no need to install or configure anything
- 256-bit end-to-end encryption with perfect forward secrecy
- completely decentralized: no need to register anywhere
- fully open source without backdoors or advertisements
- can optionally work together with TOR to anonymize your IP address
- reliable, small, fast and cross-platform
- short user manual available from the Help menu

No third party can look into your communication or block your access.
Take your communication security into your own hands with Simphone.