MADS (Multipurpose Agricultural Data System) is a free open-source tool for modelling and analysis of agricultural activities - crops, livestock, forestry and others - in developing countries, at sector, regional or project level.
Estimate software development effort with 5 different methods
...Two options are available: Delphic Oracle and Three Point Estimation.
Analogy / Comparison Estimation
This method tries to find analogies and/or compares the project to be estimated with stored projects.
Custom modular estimation for WEB and Mobile
Finally, I have included a custom modular estimation method. Using this method you can use prior efforts estimations for small modules/pieces of work that can be found in most projects in order to create complicated project estimation.
The tool can be feeded with custom modules estimations for use in future project estimations.