Blue version of the gear icon from the Wikipedia (and certain other Wikimedia projects) interwiki section.
Universal Language Selector extension of MediaWiki, https://github.com/wikimedia/mediawiki-extensions-UniversalLanguageSelector/blob/master/resources/images/cog-sprite.svg
Wikimedia Foundation; Santhosh Thottingal &lt;santhosh.thottingal@gmail.com&gt; (according to File:Cog-ULS-gear-latest.png); 

Alolita Sharma
Amir Aharoni
Arun Ganesh
Brandon Harris
Niklas Laxström
Pau Giner
Santhosh Thottingal
Siebrand Mazeland [1]