Application Service Providers (ASPs) are companies that maintain software and provide it to their customers over a network, typically the Internet. This can often reduce maintenance, backup and updating costs and provide more reliable service. Note that this is disinct from Microsoft Active Service Pages, which is also known as ASP.

• ASPnews.com - News and analysis for application and web services
• AxKit - open-source XML application server for Apache
• Lutris - open-source software products for application servers, main product is Enhydra
• Making Advanced Technology Work for Community Organizations: The Potential Impact of OSS and ASPs - based on a workshop in May 2000
• Microsoft.NET - Microsoft framework and development platform for Web-based services and applications
• Open ArsDigita Community System (OpenACS) - Open ArsDigita Community System (OpenACS)
• Oracle Application Server
• ServerWatch - Application Servers
• Sun Software - software vision, architecture, platform, and expertise for building and deploying services on demand
• XMethods - lists publicly available Web services
• Zope - open-source Web application server