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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.
If you'd like to make some money on it, there is a bounty for something similar: https://github.com/SharedStake/SharedStake-ui/issues/21
Depends on your asset. I have some stables in BlockFi, YFI in Bancor, xSushi, Cream staked in Cream protocol, Eth converted to CRETH2. As a big Yearn/YFI fan though I have to say that yearn.finance remains the easiest and most convenient place to earn yield for most assets - hopefully I don't get my heart broken.