Rated 4 out of 5 stars

Από τον/την M. στις Ιούν. 26, 2017 · μόνιμος σύνδεσμος

Worked great, but doesn't support e10s. If the author won't update the addon, you can use "Tab Count" by plujon. It shows a "badge" instead of plain number, but works fine.