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

• Software as a Service (SaaS)
  Todas as plataformas Windows Mac Linux Android iPhone Blackberry Android Tablet Web Self-Hosted Software as a Service (SaaS) BSD Xfce PortableApps.com Microsoft Office Outlook Windows Explorer Gmail GTK+ PyGTK
• Licença Open Source
  Qualquer licença Licença gratuita Licença Open Source Licença comercial