On my Mac, I use the following five programs with tabbed interfaces on a regular basis:
- Firefox
- Thunderbird
- Adium
- Terminal
- Komodo IDE
And those programs implement the following five different keyboard shortcuts for switching to the previous/next tab:
- Control + PageUp / PageDown (Firefox, Thunderbird)
- Command + LeftArrow / RightArrow (Adium)
- Command + PageUp / PageDown (Komodo IDE)
- Command + Shift + [ / ] (Terminal)
- Command + Shift + LeftArrow / RightArrow (Terminal)
Hrm.
I find Command+Alt+Left/Right to be faster/easier than Command+Page Up/Down to switch tabs on Firefox.
Firefox also supports Cmd+Shift+[], Ctrl+Tab, and Ctrl+1..9. Perhaps some of your other apps share those shortcuts?
I've changed the Keybindings in Komodo to Cmd+Option+(Right|Left) to behave just like Firefox and Tbird. Also, I use iTerm2 which allows me to do the same.
See also http://blog.macromates.com/2010/tabbing-shortcuts/
On my Mac (Lion), Cmd + left or right arrow switches between tabs in Terminal…
I believe Cmd+Shift+] and Cmd+Shift+[ work in most of them.