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fortune-sheet
A drop-in javascript spreadsheet library that provides rich features like Excel and Google Sheets
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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.
Microsoft Excel (web version), have been reconsider using it and replace it with fortune-sheet (a project I recently came across).
If you're fine with working on delimited text files in a non-interactive manner qsv is a good option. Especially with large files. It's a fork of similar xsv. I've used it for querying my files before doing any analysis with r dplyr.
You can set ses-modes cell alignment using a printer function. If you want something more visidata-like and speak R, there's ess-view-data - which seems to lack a way to directly edit a cell, but I think a little elisp could help there.