Estimation related stuff (books, tools, etc) that we have found useful:
- Preliminary guidelines for software estimation (Link not currently supported.)
- Software Estimation: Demystifying the Black Art (Best Practices) by Steve McConnell
- Agile Estimating and Planning by Mike Cohn
- The BEST library of estimation papers
- Forecasting Principles
- Paul Coomb’s book on IT project estimation
- Online Planning Poker
- Software Metrics: Measurement for Software Process Improvement by Barbara Kitchenham
- The COCOMO homepage
- International Software Benchmarking Standards Group, Data Repository (historical data)