FCharts SE is a free stock charting program which will import price data from a wide range of sources, displaying it as OHLC, Candlestick and Line charts. It has a number of built-in indicators (MACD, RSI, Exponential and Standard Moving Averages), or you can write your own with the inbuilt formula language and display them as standalone charts or overlays.

yMail can be used as a spam cleaner for your existing email setup, and also as a standalone email client. yMail's spam filters use Bayesian techniques. You can show yMail which messages are spam and which are not (before you even download them to your computer!) and each time will adjust its filters to suit. After a few days, it will be able to sort mail quickly and efficiently without any input.

This program lets you set up a number of countdown timers, with an audio alert and a popup window when the countdown reaches zero. Timers are specified in days/hours/minutes/seconds, and if you close the program with active timers it will automatically restart them with the correct remaining time when you reopen it.