Alternativ till Flexlists för Linux med gratis licens

• Linux
  Alla plattformar Windows Mac Linux Chrome OS Android iPhone Apple Watch Android Wear Pebble iPad Android Tablet Kindle Fire PlayBook Web Self-Hosted Software as a Service (SaaS) Firefox Windows Mobile PortableApps.com Electron / Atom Shell Apple Messages Chrome Install Chrome Extensions Google Chrome to Phone Todo.txt
• Gratis licens
  Eventuell licens Gratis licens Open Source-licens Kommersiell licens