Alternativa MarkMyWordsu za Opera z licenco odprtokodnega vira

• Opera
  Vse platforme Windows Mac Linux Chrome OS Android iPhone iPad Android Tablet Web Self-Hosted Software as a Service (SaaS) Firefox Opera Safari Internet Explorer PHP BSD Electron / Atom Shell Chrome Thunderbird Adobe AIR MySQL Community Edition Terminal TinyMCE Drupal Console CKEditor Google Charts
• Open Source licenca
  Vsako dovoljenje Brezplačna licenca Open Source licenca Trgovsko dovoljenje