Open-Xchange’s WebRTC-based OX Messenger voice, video and text messaging app will become available from December, the company said on Thursday. As I reported earlier this year, the plugin-free app was developed alongside Dutch VoIP firm Voiceworks. The German company’s OX App Suite tools are mostly for telcos and hosting providers that want to offer customers an alternative to the likes of Google Apps (Hangouts, or Microsoft’s Skype, in this case) though they can also be installed for use in the enterprise. OX Messenger plugs into the rest of the OX App Suite, making it possible to call or message from within email chains, for example. It will also offer calls to regular lines.