Graphic serial monitor and graphing for OSX

Hi there guys,

I'm in the process of making a telemetry system for a car that measures the stats whilst it goes round a track and once I get it all going I would love a program that can display temperature, oil pressure, accelerometer readings, rpm speed, etc... on my mac.

I want the ability to graph all these things over time with the addition of a live read out of the data on a nice looking dial or something?

I've been thoroughly confused on what software does what and how it works but any advice or explanations would be truly appreciated.

Thanks a lot!