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Collect application metrics and traces with eBPF-based auto-instrumentation instead of adding a language agent.

Language courses with speaking practice and community exchange.

Real-time voice translation for video calls

A browser IDE for running short code samples or building supported multi-file projects across many languages.

Compile systems software with a general-purpose language built around explicit control and cross-compilation.

Compile Ruby-inspired, statically typed Crystal programs into native executables.

Create compiled programs and reusable modules with Go's language and standard toolchain.

Generate concrete syntax trees that stay responsive while source code changes.

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

A terminal-native editor built around multiple selections, syntax-aware navigation, and language-server features.

Learning games covering geography, animals, maths, language arts and science.

Test language support through shaping behavior as well as character coverage.

An interactive programming language for technical and numerical computing.

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

Write programmable configuration with validation and generate JSON, YAML, and other output formats.

Combine application error reports with external uptime checks and missed-job alerts.

A source and web editor with built-in HTML preview, file tools and language-server support.

Turn a concise text description into a customizable diagram with the D2 language.

Send WordPress contact enquiries to the right inbox with translated form labels.

AI language tutor for conversation practice in 30+ languages

Market charts, screeners and custom indicators with a free account

Household budgets with bank imports and scheduled-payment reminders

Practice with partners who are learning your language.

Shape a text editor into a personal development environment using Emacs Lisp and an extension package system.