WinSCP is a free SFTP, SCP, S3, WebDAV, and FTP client for Windows.
You can message and share files inside your intranet without a server.
A Windows client for the Direct Connect networks
Psi+ Project — development branch of Psi XMPP client
MSHV Amateur Radio Software
Development toolkit for Web Services and XML data bindings for C & C++
Fast Bayesian spam filter along lines suggested by Paul Graham
Browse on Tor/i2p, Anon p2p Chat / FileTx, Conf / Video VoIP
A lightweight, high-performance Internet Relay Chat server
an ethernet-based file system for DOS
Cluster wide IPC providing datagram, connection, and bus messaging
C library for sending e-mail (with attachments) from C/C++
The Fast Echomail Processor/tosser, for Fidonet Technology Networks
The full codebase of Feisty Meow® Concerns Ltd.
Email reader for RISC OS operating system.
All of Aminet modules at your fingertips