We recommend using Windows Server 2008 or 2012, but Journyx also supports Windows 7 and 8. Our mobile app is available on iOS and Android. Our full tech specs can be found here: http://journyx.com/tech-specs
If you're asking about which other business systems Journyx integrates with, you can find a list here: http://journyx.com/features/integration-addons
If there's a system that's not on this list, then definitely get in touch with us to discuss that - we can also do custom integrations with other systems, if it has an API.