Opera Add-ons is described as 'Get extensions and themes for the Opera browser' and is an app in the Web Browsers category. There are five alternatives to Opera Add-ons for a variety of platforms, including Online / Web-based, Google Chrome, Mac, Windows and Firefox. The best alternative is Mozilla Add-ons, which is both free and Open Source. Other great apps like Opera Add-ons are Chrome Web Store (Free), Addoncrop (Free), Microsoft Edge Add-ons (Free) and CrossBrowdy (Free, Open Source).
AddonCrop is an online store that offers amazing and unique addons or extensions for your web browsers. The extensions available on addoncrop.com works perfectly for Google Chrome, Mozilla Firefox, Opera, Safari, and many other browsers.