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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.
zkSync β Created by Matter Labs, zkSync is aiming to be a major player in the zkEVM space. Their current product βzkSync 1.0β is available today with transfers/trades and limited NFT functionality, but 2.0 is in testnet which is aiming to have full EVM compatibility. ZkSync is arguably one of the safest rollups currently with a 14-day delay on code updates and an operational escape hatch should the operator go down. There is currently no token, although zkSync has confirmed that they intend to move to community governance in the future. Fees are generally under $1 for transfers.
https://l2beat.com/ - An incredibly useful site aggregating all sorts of up-to-date information about layer-2s