Alternativer til ContactUp for alle platforme med open source-licens

• Alle platforme
  Alle platforme Windows Mac Linux Android iPhone Windows Phone Blackberry Blackberry 10 iPad Windows S Web Self-Hosted Software as a Service (SaaS) GitHub Wordpress Chrome Node.JS
• Open Source-licens
  Enhver licens Gratis licens Open Source-licens Kommerciel licens