The Freeware and Shareware Ring (TFS) Ring is only for web pages that have freeware or shareware programs on their site. http://P.webring.com/hub?ring=jasonmo

Business Shareware Ring is a collection of links to shareware software that is useful in a business. This can be any software related to business. http://J.webring.com/hub?ring=businesssharewar

Serial Communications Link Analyser - by Contract I.T. Pty Limited. Communications analyzer to test RS-232 to RS-485, or RS-422 protocol converter. It will report framing errors, parity errors if parity is enabled, and character mismatch, then calculate statistics. http://www.users.on.net/~cit/