Spotter

Spotter is a program that lets students check their answers to math and science questions.

Version: 2.4.2
License: Artistic License
Operating System: Linux
Homepage: www.lightandmatter.com
Developed by: Benjamin Crowell

Spotter is a program that lets students check their answers to math and science questions. It handles symbolic as well as numerical answers.

Spotter application is free and open source.

I got the idea for Spotter from LON-CAPA, which is also free and open-source. The programs are alike in some ways and different in others. There is another program called WeBWorK that also does similar things; it doesn't cost money, but I'm not sure if it's open-source or copylefted.