RetroShare is a cross-platform, secured and decentralized communication system. It lets you to securely chat, share photos, videos, and more with family and friends, using OpenPGP to authenticate peers and OpenSSL to encrypt all communication.
IXSF Messenger is a java-based messenger
IXSF Messenger is a java-based messenger with file transfer option. Java Runtime Environment (JRE) 1.4 or higher is required. This application is built in two parts - server and client. Server part serves client's requests.
MX Coders Will Create Application For WinMX p2p network such as Powerful Chat Server, Chat Clients, Protocol Clients(Transfers, Chat, Sharing Files, Message System) for WinMX Network All written in C++, VB, With .NET Extension Support.
Very lite and easy-to-use LAN file sharing software. Using Turtle you can send/receive files in a LAN network to/from any machine which you know the IP address or DNS name. Turtle imitates Blutooth file sharing pattern in mobile phones.
i2psuite is a suite of applications for Windows and Linux and is aimed to make use of the I2P network much easier. The suite contains many applications useful to I2P in an easy to install and easy to use suite. READ HOWTO ON DOWNLOAD PAGE OF WEBSITE