**Wolfram Alpha** is an online query system to answer any question. I only use it sometimes to query for simple mathematical objects without having to resort to the paid… 89 more words

## Tags » Computer Algebra System

#### Wolfram Alpha

#### KAlgebra

**KAlgebra** is a simple computer algebra system and graphing calculator for Linux. The 2D and 3D plotting is excellent and a replacement to using an actual graphing calculator. 295 more words