- A train network game built on real population data.
- Lay track between cities and plan passenger lines.
- Make your own maps in the Map Editor.
- Solve sudoku to grow your farm.
- Baseball, Football and Gerrymandered variants.
- Learn techniques with the Trainer.
- Handwriting recognition that runs in the browser.
- Train your own symbols in the Model Builder.
- Add drawn reactions to any site with the widgets.
- Sports odds and forecasts, updated daily.
- College football playoff chances and power ratings.
- Baseball games: Lineup, Triple Play and 27K.
- Chess board images as SVG, PNG or GIF from any FEN.
- Play Chess Bridges, a logic puzzle on a chessboard.
- Embed boards anywhere with a web component.
- Reads maths from text, LaTeX, JavaScript or Python.
- Writes it out as LaTeX, MathML, Python, SQL and more.
- Try the Postfix Quiz.
- Maths drawn as HTML and CSS, not images.
- Every symbol is an element you can style or animate.
- Simplify algebra step by step with the CAS.
- Image filters written as maths.
- Chain and tune filters, then share them as a link.
- Add them to your own pages: how to use it.
- Tables, SQL and charts with formulas written as maths.
- Filter, sort and pivot millions of rows.
- Try SQL in your browser.