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Interactive TypeScript challenges with community discussion

Learn smart-contract coding by building games

Godot learning with interactive apps and game projects

Real-time crypto airdrop tracking dashboard with hand-written research and free calculators.

Shared digital scores with annotations and playback

Browser-based live coding of musical patterns

Scholarcy summarizes papers, articles and textbooks into interactive flashcards.

Real-estate CRM with rules-based assignment and response-aware action plans

Test entry and exit rules against historical price bars

Add small reactive interactions to HTML with directives such as x-data, @click, and x-show.

Write visual sketches in a desktop editor and run them in a graphics window with Processing.

Work with files and command output as structured records and tables in a cross-platform shell.

A Windows Python IDE pairing a script editor with an interpreter, debugger, project tools and unit-test interface.

Write HTML, CSS, and JavaScript in a browser editor with an updating preview.

A visual Flutter app builder with an in-app code editor for adding custom Dart behavior.

A Python and R IDE that pairs script and notebook editing with live data exploration tools.

AI-assisted data analysis and interactive charts

Browser experiments for making and understanding music

Free ASL lessons, dictionary and learning games.

A searchable collection of educational resources, interactive games and maths worksheets.

Spreadsheet-driven film credits with layout and timing control

Integration with visible input, steps and graphs

Convert compatible quantities and inspect unit definitions from a CLI

Explore and convert tabular data in a terminal