JSChess extension - Opera add-ons

Jasz Couture Dress 7413 - Henri's

If chess was made by EA : r/AnarchyChess

20 Best Opera GX Extensions You Need to Install Right Now

Chinese Chess in HTML5 and JavaScript is a project of Chinese Chess with AI based on HTML5/Canvas and native javascript, it supports desktop and mobile devices.

Chess News and Event Coverage

Faces of US Chess

AniWatcher extension - Opera add-ons

What is the most intresting game of chess ever played? - Quora

SimpleExtManager extension - Opera add-ons

For The True Chess Fan: Opera Launches New Custom Chess Browser