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Look up US winter hardiness zones

Classroom resources including lesson plans, teaching units, worksheets, themed packs and interactive tools.

Interactive tutoring and adaptive practice in mathematics and coding.

Retrieve files and mirror sites without a desktop

An engineering programming environment for developing algorithms, analyzing data, and visualizing results.

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

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

Combine traceroute and ping in an interactive diagnostic tool

FTP browsing and batch transfers for terminal workflows

Compare and merge text interactively online