具有免费许可证的SeaMonkey版UKs Kalender的替代品

• SeaMonkey
  所有平台 Windows Mac Linux Chrome OS Android iPhone Windows Phone Blackberry Apple Watch Android Wear iPad Android Tablet Kindle Fire PlayBook Web Self-Hosted Software as a Service (SaaS) Firefox SeaMonkey BSD Xfce PortableApps.com S60 Chrome Thunderbird Sunbird Install Chrome Extensions Google Chrome to Phone
• 免费许可证
  任何牌照 免费许可证 开源许可证 商业牌照