Opera



Opera uses a userscript
Advantages:
>>Automatic Updates
>>Install and Forget


Disadvantages:
>>No automatic updates


Installation:



In the menu, go to "Tools -> Preferences --> Advanced --> Content --> JavaScript Options."
Pick the "scripts" list


>From here on it'll be easier ;)

Open bbcodes
In the menu, choose "File > Save As..." and save the file into your list op scripts