Martindale's 'The Reference Desk: Calculators On-Line'
A very extensive set of Java script based online calculators covering many subjects.
http://www.martindalecenter.com/Calculators.html

Bemaco
geochron
http://www.geochron.co.uk

Copco
Copco Inc.
http://www.copcoinc.com/

Giva Inc.
On Demand Software from Giva, Leading Provider of Customer Service and Support, Help Desk, and More.
http://www.givainc.com/

24 x7 Help Desk
Online Help Desk Services,24/7 Email and Chat Support, Helpdesk Portal and Help Desk Solutions for Customer Service, Computer helpdesk services and technical support solutions.
http://www.24x7helpdesk.com/

Help Desk Outsourcing
Provider of help desk outsourcing services for internal employees and/or external customers. Outsourced help desk for "shrink-wrapped" software and systems, web-based applications, and non-standard software applications.
http://www.ghdsi.com/

Big Web Desk
Help Desk Software - bigWebDesk, Completely web based help desk software by bigWebApps
http://www.bigwebdesk.com

Help Desk Journal
Tips and techniques for Help Desk leadership and operational excellence.
http://helpdesk.wyopub.com

Help Desk Management Toolkit
Help Desk Management Made Easy - A comprehensive toolkit comprising guidebook, training presentation, audit/review questionnaire, and SLA advice
http://www.help-desk-manager.com/

World Desk Pro
Free help desk software from world desk pro - The easiest to use helpdesk software available. Reduce cost of support 30% and improve customer satisfaction. Easy setup , simple to use, windows or web-based application, reporting, email notification, wireless dispatch, dashboard technology.
http://www.worlddeskpro.com