Alternativ till Wepay för Software as a Service (SaaS) med gratis licens

• Software as a Service (SaaS)
  Alla plattformar Android iPhone iPad Android Tablet Web Self-Hosted Software as a Service (SaaS) Wordpress HP webOS
• Gratis licens
  Eventuell licens Gratis licens Open Source-licens Kommersiell licens