Register now to get access to the demo-league (Scottish Premier League) for free for use when evaluating and developping your application. Use a valid e-mail as e-mail validation is required.
Official .NET library - input your API-key and let the library parse XMLSoccer.com XML into objects.
Unofficially JAVA library - input your API-key and let the library parse XMLSoccer.com XML into objects.
Open Source (community created) PHP parser available on GitHub for you to fork.