＜Notes on use＞
On startup, the tabs displayed last time is displayed by add-on.
Therefore, set "When Firefox starts" on the setting screen to "Show a blank page".

Install

• License: Mozilla Public License 2.0
• Weekly downloads: 2
• Average daily users: 40
• Rating: 3/5 of 10 ratings
• Created: 2018-01-31 17:37:51
• Last updated: 2021-09-12 06:50:52
• Homepage: http://boutoks.blog.jp/archives/29470047.html
• Support site and email
• Orig: https://addons.mozilla.org/en-US/firefox/addon/tab-group-window/
• API: tab_group_window@crossblade.her.jp