具有免费许可证的Software as a Service (SaaS)版gMTP的替代品

• Software as a Service (SaaS)
  所有平台 Windows Mac Linux Chrome OS Android iPhone iPad Android Tablet Web Self-Hosted Software as a Service (SaaS) BSD OpenSolaris
• 免费许可证
  任何牌照 免费许可证 开源许可证 商业牌照