Alternativer til Sipdroid til PortableApps.com med kommerciel licens

• PortableApps.com
  Alle platforme Windows Mac Linux Chrome OS Android iPhone Windows Phone Blackberry Apple Watch Android Wear iPad Android Tablet Windows S Web Self-Hosted Firefox BSD PortableApps.com Chrome
• Kommerciel licens
  Enhver licens Gratis licens Open Source-licens Kommerciel licens