Alternativas ao Form para Software as a Service (SaaS) com licença de código aberto

• Software as a Service (SaaS)
  Todas as plataformas Windows Mac Android iPhone Apple Watch iPad Android Tablet Web Self-Hosted Software as a Service (SaaS) Slack Apple Messages Apple TV Trello Microsoft Office Suite Atlassian Stash Google App Engine
• Licença Open Source
  Qualquer licença Licença gratuita Licença Open Source Licença comercial