Bestimate
Title: Bestimate
Description: A small utility designed to help you become more accurate and realistic about your predictions and promises. Add items like "Number of pages I will write this week" or "Number of pounds i will lose this month", and provide your predicted/promised values. Then, at the end of the time period, record your actual achieved values. Bestimator keeps track of how far off you were from your initial prediction/promise. Note that this program is intended to help you become more realistic about your predictions, so being off in either direction is just as bad!
Version: v1.0.5 (2010-02-27) -- Full changelog
Download: 
Portable zip
Discussion forum: Here
Features:
- Track as many entries as you would like.
- Real-time updating of estimates as you adjust the data.
- Export to CSV option.
Screenshot:
