Alternativas ao jTalk para Telegram com licença de código aberto

• Telegram
  Todas as plataformas Windows Mac Linux Chrome OS Android iPhone Windows Phone Blackberry Blackberry 10 Apple Watch Android Wear iPad Android Tablet Kindle Fire Windows S Web Self-Hosted Software as a Service (SaaS) Firefox Safari BSD Windows Mobile Java Mobile Xfce Haiku PortableApps.com Facebook FreeBSD F-Droid Apple Messages S60 Facebook Messenger Chrome HP webOS Telegram PureOS (Purism)
• Licença Open Source
  Qualquer licença Licença gratuita Licença Open Source Licença comercial