The most important features that are still missing from the applet are certainly the ones already implemented in nifty:
Besides those rather cosmetical additions, an interesting possibility for further work would be to integrate the whole applet into the AdventNet product line of Network Management products. The applet code could then be used as one module for building complex network monitoring applications. At the same time, the existing user interface components AdventNet provides could easily be used for to display graphs over all kinds of counters. One could for example imagine that the user picks one particular flow out of the XY-graph that is displayed and then decides to make a graph over the number of bytes or packets transferred for this flow. This could be used to monitor just a particular pair of hosts activity over longer periods of time. Currently such fine granularity is not available with the standard network monitoring and management software.
Other things to add or improve might be to allow graphing for bidirectional traffic criteria, i.e. two points in the charts or 3-D charts displaying the sent and received PDUs or number of octets and not only the total, as it is currently done.