ESV Bible Web

Crossway allows you to access the ESV Bible text from our server and include it on your website, free of charge for non-commercial use. This service, like most web services, requires that you have access to a programming language on your web server, such as Perl, PHP, or ASP, as well as basic knowledge of how to program in that language. You won't be able to access the service using only HTML, although you can access some of it through Javascript or RSS without obtaining an access key.
More information: http://www.esvapi.org/