A graphing calculator meant as a desktop replacement for the TI-83. A calculator / graphing tool written in Java. The goal is to create an open source, cross-platform, desktop graphing calculator with functionality similar to a TI-83.
Take Egors Calculator for a test drive to fully assess its capabilities!

Features:
1. Does NOT require installation.
2. Works on Windows, Linux, and Mac.
3. Evaluate mathematical expressions.
4. Store and reuse variables.
5. Simultaneously graph multiple equations.
6. View table of values of an equation.
7. Find min/max values of an equation.
8. Plot and connect points.
9. Save and load the state of the application.

The license of this software is Free, you can free download and free use this calculator software.