A Gem Stone weight estimator/calculator for mounted gemstones in items
The new site is at http://psychometricon.net/libirt/
Generate and solve Travelling Salesman Problem tasks
Basic Mathematical Operations
Calculate primes numbers with yourself
MathTools is an aid in preparing printed math tests.
ARO helps physically disabled students to create mathematical drawings
Practise basic mathematical operation
Gradesystem
dAnalytics is a software made for education in discriminant analysis.
invert matrices with the Gauss–Jordan elimination