very useful (i like it to keep the todolist or notes in sideview).

wishlist:
+ it would be nice to be able to drag tabs to sideview.
+ and in some cases a second (or even more) sideview can be useful, i.e. to use some columns to compare mobile views of sites or to view trello, notes, mobile site & desktop site together

Superb! Very useful add-on!
I hope that it continues to be developed. For example, to be able to drag it with no restriction. Or to have multiple pages that you can switch.

Awesome extension! Exactly what I was looking for to watch my email.
Add more futures plz
- open in a new tab not in mobile view
- back button
- multiple side views
- resizable more then 1/3 of a page

I use it to keep my task lists open alongside my email+calendar+etc, so it's really a huge help with my daily office work!

Fantástica extensión realmente práctica. Yo añadiría la opción de mostrar la versión de escritorio de las webs en el Sidebar y no solo la versión móvil.

This is an amazing idea and a very handy one. It should be not just developed but considered a Firefox essential piece.
It's great for web-mail checking, mobile version view, quick service checking, rapid social media posting, etc.
Hope it gets the attention it deserves.
Thanks a lot for such a great add-on!

great productivity booster!