Alternativer til Grounds.io til PHP med open source-licens

• PHP
  Alle platforme Windows Mac Linux Chrome OS Android iPhone Web Self-Hosted Software as a Service (SaaS) PHP JavaScript Python Java Django Ruby Node.JS C++ .NET Framework Amazon Web Services Cloudron Microsoft Azure Go (Programming Language) Ruby on Rails Android SDK PostgreSQL Redis Apple Swift Objective-C Apache Solr
• Open Source-licens
  Enhver licens Gratis licens Open Source-licens Kommerciel licens