Web Applications are web sites that perform the same function as software that you might otherwise download and run locally. Having the advantage of executing on a web server, Web Applications don't consume space on your hard drive, don't crash or conflict with other applications, and best of all are accessible from anywhere.
Leave your desktop behind and use these applications from any browser equipped machine on the net.
The companies that create and serve web applications are called Application Service Providers (ASPs).
A searchable directory of web-based apps and application service providers (ASP) arranged by price, reviews, ratings, and hits. http://www.findapps.com/
A searchable directory of Application Service Providers and hosted business applications. ASP-Directory provides a comprehensive listing of industry leading hosted software solutions. http://www.applicationserviceproviders.com
Explanation of what an application service provider is. Includes current examples and a guide on how to select an ASP. http://www.howstuffworks.com/asp.htm
Web developer software to add professional greeting cards with pictures and music to your ASP website. One hundred percent open source and customizable. http://www.nycproject.com/store/asp-cards.html
Sanity is a software tool to design and depict relational database structures using the entity-relationship diagramming notation. http://www.objectworkshop.com/
Software design house making WWW and XML software and solutions for the Mac OS. Maker of Interaction, a Mac web application server for building dynamic, social websites. http://www.in-progress.com/