The Great Periodic Path Hunt at gwtokarsky.github.io
OpenM++: open source microsimulation platform
Query and plot data in seconds (Excel, CSV, SQL and NoSQL DBMS)
A web-based minimisation service
Welcome to the Volunteer-Based System for Research on the Internet!
sparse and dense matrix, linear algebra, visualization, big data
The LaTeX Equation Editor
A simple programmable spreadsheet for learning statistics.