1)   Discounted Cash Flow Analysis Calculator 2.1
Discounted Cash Flow Analysis Calculator performs a quick analysis of 14 cash flow series using 5 different discount rates per series.

 2)   MoneyToys - Discounted Cash Flows applet 2.1.1
MoneyToys Discounted Cash Flows Calculator for web sites lets your visitors easily calculate the net present value of a series of cash flows without leaving your site. Installed and configured with only a few lines of HTML.