Re: Server statistics monitoring?

I'm working on setting up a new PostgreSQL database server, and would like to be able to monitor a number of statistics on it, such as:

number of connections

number of queries

query times

etc.

All these stats are easily available, either from the pg_stat_statements view (which I have enabled) and the like, or the log file (turn on log connects/disconnects), and I figured there would be a plethora of options available for monitoring these things. However, in searching around so far all I've found are a couple of hosted solutions. Granted, they look fairly nice, but we'd much prefer to keep this in-house.  Paid solutions are fine, as long as the cost is reasonable, but we do want full-control. Before I spend my time writing my own solution, is there anything out there that can make nice graphs of various postgresql metrics? Thanks.