Precision Trigonometry: Advanced Calculator for Complex Math
Integrated Development Environment (IDE) for learning HDL
Small application that helps linearizing (cos x)^n and (sin x)^n
A small and powerful utility to generate school/college time table.
Kaldin | Open Source Web-based online examination software
Assistant for generating Natural Deduction style proofs
Project to dinamically export queries to Excel, PDF and Jasper Viewer
Mathematical Parser for Java
I believe it is the best tool for everone get it it's free.