Alternativas ao Venny para Firefox com licença gratuita

• Firefox
  Todas as plataformas Windows Mac Linux Chrome OS Android iPhone iPad Android Tablet Windows S Web Software as a Service (SaaS) Firefox Chrome Microsoft Office Word Google Drive Google Drive - Docs Google Apps Microsoft Office Suite Google Drive - Sheets
• Licença gratuita
  Qualquer licença Licença gratuita Licença Open Source Licença comercial