This is the list of companies that, in the view of ASPnews, are the world's 25 leading service providers for the ASP, Software-as-a-Service (SaaS), Web Services, Service-Oriented Architecture (SOA), and Utility Computing industries. For inclusion, companies must meet the following criteria:

• Have the provision of network-based applications and/or services as their core business
• Have a substantial and active end-user customer base for those services
• Be able to demonstrate proven revenue streams
• Be innovators in the online delivery of software-based services
• Be recognized as a leader by others within the industry

What do you think of our choices? What ASP providers and enablers are missing that deserve to be here? And what companies do you think made that list that shouldn't have? Critique our selections — or make your own list — in the ASP Discussion Forums.