Coda is a new type of document that blends the flexibility of documents, the power of spreadsheets, and the utility of apps into a single new canvas.
Organize anything you can imagine with Airtable.
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.
Reactivepad is an online collaborative document editor that lets you put calculations directly inside your textual narrative - think of MS Word and MS Excel combined. It allows to create truly smart and reactive data-driven documents that are almost like apps!