This add-on syncs all your tabs, bookmarks and history between your devices, also lets you share them between your friends. Uses a django-based-server to sync all your items and also uses Dropbox and Google Drive as optional servers to save your tabs, bookmarks or history. You can turn off the auto-sync option if you want to but you can still choose what you want to save and not. You can view them from any device and any browser, not only Firefox! Share by introducing emails or by creating a group or with an existing group!
The menu appears with the Firefox Menu.
You can also delete the saved items if you want to, you can stop sharing any item as well.
When you install the add-on, there is a help page as well as a quick start guide page which will guide you through the add-on.
This is the mobile version, the desktop version is also available on Sync & Share Desktop
Don't forget to add a review, even if it is a bad one, it would be very helpful. Thank you!
Note: It won't modify your bookmarks or your history or your tabs.