DataNitro - DataNitro enables users to automate Excel with Python and also to turn a spreadsheet into a database GUI - or a web server backend.
iotlist - Discover the internet of things
Sheetbase - Free, fast and fun way to build modern websites and apps 🛠️
Fieldbook - Create a database, as easily as a spreadsheet
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
Airtable - Airtable works like a spreadsheet but gives you the power of a database to organize anything. Sign up for free.