Alternativas ao YateClient para Mac com licença de código aberto

• Mac
  Todas as plataformas Windows Mac Linux Chrome OS Android iPhone Windows Phone Blackberry iPad Android Tablet Kindle Fire Web Firefox BSD Windows Mobile Java Mobile Xfce PortableApps.com Facebook S60 Facebook Messenger Chrome HP webOS Microsoft Office Suite Microsoft Exchange Server
• Licença Open Source
  Qualquer licença Licença gratuita Licença Open Source Licença comercial