Well i want to plot data from my arduino serial port to 2d and 3d and i can not find any plugin for Eclipse to do it internal.Is there any? Also is there any other program that can do it easily without using Matlab that needs lisence etc?
You don't say what sort of 2d and 3d 'plot' you're aiming for, but if a static graphic will do you could use Excel, if you have that. There's even a plug-in which enables you to upload and update spreadsheets on the fly, if you need dynamic updates - otherwise you could just save your serial data to a .CSV file.
Why do you want to plot with eclipse?