现在很多软件都搞在线安装，实际上不适应天朝用户，下面收集几个离线安装包下载路径:

dropbox
https://www.dropbox.com/download?full=1&plat=win

chrome
https://www.google.com/intl/en/chrome/?standalone=1

firefox
https://www.mozilla.org/en-US/firefox/all/#product-desktop-release

firefox esr
https://www.mozilla.org/en-US/firefox/enterprise/#download