Free designable front end for PostgreSQL

To Whom It May Concern:

Wanted to set up a database in a small network with PostgreSQL on Windows. Before I start there is one question:

Is there free/opensource-ware to set up a self designed user-interfaces on the “workstationss” with forms and buttons,
inwhich mere mortal people can put data in and print of some predefined reports? 

Can somebody give me a hint please?

Thanks in advance

Peter


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