CalcFusion - CalcFusion enables users to transform Spreadsheets into APIs that can be plugged into any IT system.
Diagrammm - Fundamentals on data visualization
Sheetbase - Free, fast and fun way to build modern websites and apps 🛠️
Crossfilter - Fast multidimensional filtering for coordinated views
Sheety - Turn any Google sheet into an API instantly, for free. Power websites, apps, or whatever you like, all from a spreadsheet. Changes to your spreadsheet update your API in realtime. Neat
Sheetsee.js - Connect Google Spreadsheets and visualizing the data