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amazon-smile-redirect
Discontinued This Extension will automatically redirect you to the corresponding AmazonSmile page, so you will never need to remember to go to AmazonSmile first. In order for your non-profit to benefit from your purchase, you must complete your purchase through AmazonSmile.
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SurveyJS
Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.
You can also install a web browser add on like this one which will auto redirect you to the smile site when clicking on amazon links. That way you don't even need to remember to change the web address.