具有开源许可证的Firefox版Do!的替代方案

• Firefox
  所有平台 Windows Mac Linux Chrome OS Android iPhone Windows Phone Blackberry Blackberry 10 Apple Watch Android Wear iPad Android Tablet Kindle Fire PlayBook Web Self-Hosted Software as a Service (SaaS) Firefox Apple Messages S60 Chrome HP webOS Gmail React Vim Install Chrome Extensions Google Chrome to Phone
• 开源许可证
  任何牌照 免费许可证 开源许可证 商业牌照