Access achieves the "quick development" by tight binding of database to front end. pg was designed as a stand-alone database, as are all database servers.
pgadmin III works fine for most development tasks. (it comes packaged with pg.) I've also used
Database Designer by MicroOlap, which is a graphical reverse engineering and database design tool. (It can reverse engineer almost any ODBC accessible database & generate the script to build the database in PostgreSQL)
And, VB6 is a fine Windows tool to interface to postgres.