This add on allows you to tab through Firefox' open tabs but it will skip the pinned tabs. Also. there will be no wrap-around, so when tabbing until the end the tabbing stops.
Tab to the right using Ctrl+Shift+9 and to the left using Ctrl+Shift+0.

Install

• License: Mozilla Public License 2.0
• Weekly downloads: 0
• Average daily users: 0
• Rating: 0/5 of 0 ratings
• Created: 2019-05-22 15:34:38
• Last updated: 2019-05-22 15:40:10
• Homepage:
• Support site and email
• Orig: https://addons.mozilla.org/en-US/firefox/addon/tabbertje/
• API: {69d2cb24-d275-4934-bc1e-2820a6f9814e}