Organize anything you can imagine with Airtable.
Custom internal tools have the same building blocks. Retool gives you those building blocks, so you can build them much faster.
Calcapp is an app designer for spreadsheet users with support for almost 300 formula functions. Lay out your interface visually, connect formulas to fields and share your app with co-workers and customers. Add multi-level menus to help your users navigate, buttons that e-mail PDF reports and validation rules that flag bad values. Apps work offline.
SheetAside is Chrome Extension. It allows you to access your Google Sheets from any tab, with a right-click. Can be used for manual leads collecting, research, and vocabulary building.