Rated 3 out of 5 stars
Key to the previous tab: 1Key to the next tab: 2[check] Stop working when the cursor is on an input form.I had a look at 3 other addons that mucked up input forms. I have finally found the perfect single key tab switch addon. As you can guess, I'm an Opera user.
Edit: dropping this from 5 to 3 stars. I discovered that it doesn't work if you've just middle clicked on an image link (to open it in a background tab). Since I middle click image links all the time, it's a bit of a gamebreaker. Opera doesn't have this issue. If this is fixed I'll push it back to 5 stars.