The Alamin GSM SMS Gateway is a group of daemons that allows you to send/receive SMS messages from any GSM device that supports AT+ commands (GSM modems or GSM mobile phones) or supported by Gnokii. A client program allows you to send messages from any IP client. An SMTP interface is provided to allow MTAs to send SMS directly to the GSM network. IMP (Incoming Message Processor) modules allows you to extend functionality to implement banking, network administration, bd querys, etc. from a GSM mobile phone.
Alex's Firewall ByPasser is another TCP tunnel for HTTP proxies. It has been tested for MSN Messenger, emule, BitTorrent, FTP (passive only), Yahoo! messenger, IRC (xchat), and FireFox on Fedora Core 3, FreeBSD 6.0, and Mac OS X. It should work under all POSIX complaint systems and all proxies allowing HTTPS CONNECT. It features a multi-threaded design, multiple proxies, the ability to check proxy lists, a curses interface, a daemon mode, and support for the Socks4a and Socks5 protocols.
Althea is an IMAP email client for X that uses the GTK widget set. It was built with the IMAP protocol in mind in order to avoid many of the pitfalls experienced by POP clients that added IMAP support. Althea allows easy access to a nearly unlimited number of servers, and has a very small memory footprint. As of version 0.5.0 Althea also supports IMAP over SSL.