Easy to use C websocket library
EasySSL is a library that can establish an SSL/TLS connection
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High-level C++ TCP server framework
Web-based application to execute shell commands.
Robust open source POP3 client and MIME parser written in C#
mod_gnutls apache module
PHP-based app to create your own CA and sign SSL certs in seconds!
A free .NET library for accessing IMAP servers, written in C#
a powerfull c++ library for win32/linux, server framework, HttpServlet
Python object remoting via web server (apache etc...)