Great addon! I love it! But, since a few weeks I got always this message, when I open the browser:

Simple Tab Groups addon conflicts with the following enabled extensions:

Enabled:
Tab Session Manager

To avoid losing tabs or their location in windows and groups, it is strongly recommended to turn off or remove enabled extensions that conflict with the Simple Tab Groups addon. You can do this on the addons settings page "about:addons" or by pressing the key combination Ctrl+Shift+A

???

Nie wyobrażam sobie Firefoxa bez tego dodatku!

This vastly improves tab and workflow management.

this extension is really good. simple tab group keeps me organized.

quite simply changed the way I am browsing the internet, I was using Tree Style Tab before this and what a massive upgrade!!

Excelente. Tengo distintos grupos de ventanas, mantiene el browser ordenado y me ayuda a enfocarme.

This is great for keeping things organized and manageable. I've used STG for years and it's worked perfectly. Recently I've been loving it because I've been into customizing Firefox, and I've found that it mostly plays well with Tree Style Tab, Multi-Account Containers, and Containerise (all also very useful). STG is an awesome extension.

ok

Thanks to simple Tab Groups, I am back from vivaldi to firefox.
I took a few efforts to get used to it, but now I am at ease with both concepts.

Thanks to the backup function of Simple Tab Groups, I was able to export my tabs from the Firefox developper edition to the stable branch.
Very nice to have this flexibility.