SpreadSimple - A blazing-fast way to create and manage sites using Google Spreadsheets

Forms Manager - Forms Manager is an online form of automation software that helps businesses build forms, manage workflows, and analyze real-time reports.

Algo by AirDev - Turn a Google Sheet model into a web app in 5 minutes

ginstr - ginstr is a business software that lets user create custom form-based apps for customers or employees to download, fill out, sign and return from any web device.

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

Launchcloud - Data collection & automation made simple.