CodeCanyon - Grid Builder: Data Collecting made easy | 13MB
Grid Builder lets you create a strong and user friendly frontend for your database easily within minutes.
Interesting features are :
Creating an application backend that is presentable to a client.
Auto generated live search for every field you create.
Quick apps that have relationships you cannot create with most ajax grids.
Letting your client design their own database structures.
Scaffolding and testing your datamodels before you build your application.
Creating complicated forms for collecting data.
Providing predefined form fields such as date picker, time picker, html editor
Easy validation types like email and url.
Advanced database relationships.