Alternativer til iGTD til PortableApps.com med open source-licens

• PortableApps.com
  Alle platforme Windows Mac Linux Chrome OS Android iPhone Blackberry Blackberry 10 Apple Watch iPad Android Tablet Kindle Fire Web Self-Hosted Software as a Service (SaaS) Firefox Opera Safari Internet Explorer BSD PortableApps.com Chrome Microsoft Edge HP webOS Outlook Gmail Firefox OS GNU Emacs
• Open Source-licens
  Enhver licens Gratis licens Open Source-licens Kommerciel licens