At rosettacode.org, see code samples for only the languages that you select.
RosettaCode.org is a great website for comparing programming languages and/or learning a new language based on others that you already know. However, for each sample programming task, there are so many implementations available in different languages that it can be difficult to sift through the clutter and find the code samples for the languages that you are focusing on. This extension solves that problem by only showing code samples for languages that you have specifically selected.