a232dd49_ced_Process_Control___Open_APC__Description
[Plug-In] 2D Plot [Remarks] sourcecode available, wxWindows License [Description] 
Collects numerical data and display them in up to 6 separate graphs within a 2D coordinate system; both, the appearance, behaviour and design of the graphs and of the coordinate system can be configured freely.
OpenAPC - Open Source Advanced Process Control - Open APC
Description