Retroshare

Retroshare is a cute program that lets you securely chat and share files with your friends, using an advanced system to authenticate peers and OpenSSL to encrypt all communication. It uses encrypted communication, ensuring all shared information is known only to you and your peers.

The application takes advantage of P2P technology and RSA security system to offer a safe way to share files while chatting. Your friends are the only one who have access to the files you share, so your privacy is always safe.

Conversations are encrypted to improve privacy as well as the networks used to share files.

In short, Retroshare is a good option if you are worried about safety and privacy when sharing files.