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Contest problems with automatic solution judging

A Clojure learning book with further programming resources

AI math solver and tutor with step-by-step answers, PDF homework help, and study tools.

Game-based maths and reading with problems, explanations and teaching videos.

Small interactive coding challenges

Civil FE preparation with exam-style problems, practice exams, tutoring and a public video course preview.

Algorithm exercises grouped into a structured problem set

Build native programs with Rust and manage their packages and builds through Cargo.

A beginner-focused Python IDE that makes variables and program execution visible while you learn.

Compare source files by syntax structure rather than relying only on line-oriented diffs.

A modal, configurable text editor for programming and general text work.

A functional language and Mix toolchain for maintainable applications on the Erlang ecosystem.

Define AWS infrastructure in familiar programming languages and synthesize deployable applications.

A dynamic programming language with an interactive development workflow and a JVM-based library ecosystem.

An immersive Smalltalk environment where a live image, code tools, and debugger support immediate feedback.

Design mobile app screens in a browser and program their behavior by assembling visual blocks.

A transactional hierarchical key-value database with interfaces for multiple programming languages.

A graphical Racket development environment with interactive evaluation, language selection, and debugging tools.

Build apps, command-line tools, and services with Swift's compiled programming language.

A beginner-focused BASIC IDE with instant graphics, a step debugger, and a browser-based WebAssembly edition.

Build type-safe concurrent programs for the Erlang virtual machine or compile them to JavaScript.

Automate text-heavy tasks and build scripts with Perl's mature language and module ecosystem.

Minnesota gardening references separated by plants and problems

Workout programming and client follow-up for personal trainers