TabSync Pro - manage and synchronize your tab between devices and browsers. Cloud account is required, you can use your existing Gmail / Facebook / Twitter account: https://tabsync.fastaddons.com/ Top features:

Cloud tabs - access your tabs on all your devices even when they are offline - using any web-browser, including your phone!
tab management - organize tabs remotely on your PC at work from home
No Ads!

Features coming in future releases:

Undo / Redo / History for easy revert of changes (separately for each device)
reordering devices
drag and drop whole windows
nicer cloud tabs page with more options
support for Firefox containers
sessions management

Recently added features:

Version 1.7
Android support is here! Now you can manage your Android tabs from your desktop!
renaming devices - you can now name your device in the Options page
active tab are now marked as bold

Note: I'm developing this add-on in my free time for you for free. Please consider supporting my work by becoming my Patron or by donation. Thank you :)

Developer response